diff --git a/Cube4Fun.xcodeproj/project.pbxproj b/Cube4Fun.xcodeproj/project.pbxproj
index ce9a18d..ebf42fa 100644
--- a/Cube4Fun.xcodeproj/project.pbxproj
+++ b/Cube4Fun.xcodeproj/project.pbxproj
@@ -231,7 +231,9 @@
 		ADCB864D1AC6471C00E300C7 /* Project object */ = {
 			isa = PBXProject;
 			attributes = {
-				LastUpgradeCheck = 0620;
+				LastSwiftMigration = 0700;
+				LastSwiftUpdateCheck = 0700;
+				LastUpgradeCheck = 0700;
 				ORGANIZATIONNAME = "Nikolai Rinas";
 				TargetAttributes = {
 					ADCB86541AC6471C00E300C7 = {
@@ -335,6 +337,7 @@
 				CODE_SIGN_IDENTITY = "-";
 				COPY_PHASE_STRIP = NO;
 				ENABLE_STRICT_OBJC_MSGSEND = YES;
+				ENABLE_TESTABILITY = YES;
 				GCC_C_LANGUAGE_STANDARD = gnu99;
 				GCC_DYNAMIC_NO_PIC = NO;
 				GCC_OPTIMIZATION_LEVEL = 0;
@@ -407,6 +410,7 @@
 					"$(PROJECT_DIR)",
 					"$(PROJECT_DIR)/Cube4Fun/Poco",
 				);
+				PRODUCT_BUNDLE_IDENTIFIER = "nikolairinas.$(PRODUCT_NAME:rfc1034identifier)";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_OBJC_BRIDGING_HEADER = "Cube4Fun/src/Cube4Fun-Bridging-Header.h";
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
@@ -429,6 +433,7 @@
 					"$(PROJECT_DIR)",
 					"$(PROJECT_DIR)/Cube4Fun/Poco",
 				);
+				PRODUCT_BUNDLE_IDENTIFIER = "nikolairinas.$(PRODUCT_NAME:rfc1034identifier)";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_OBJC_BRIDGING_HEADER = "Cube4Fun/src/Cube4Fun-Bridging-Header.h";
 				USER_HEADER_SEARCH_PATHS = /opt/local/include;
diff --git a/Cube4Fun.xcodeproj/xcuserdata/nrinas.xcuserdatad/xcschemes/Cube4Fun.xcscheme b/Cube4Fun.xcodeproj/xcuserdata/nrinas.xcuserdatad/xcschemes/Cube4Fun.xcscheme
index 5b83085..9efc293 100644
--- a/Cube4Fun.xcodeproj/xcuserdata/nrinas.xcuserdatad/xcschemes/Cube4Fun.xcscheme
+++ b/Cube4Fun.xcodeproj/xcuserdata/nrinas.xcuserdatad/xcschemes/Cube4Fun.xcscheme
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "0620"
+   LastUpgradeVersion = "0700"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"
@@ -37,10 +37,10 @@
       </BuildActionEntries>
    </BuildAction>
    <TestAction
+      buildConfiguration = "Debug"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
-      shouldUseLaunchSchemeArgsEnv = "YES"
-      buildConfiguration = "Debug">
+      shouldUseLaunchSchemeArgsEnv = "YES">
       <Testables>
          <TestableReference
             skipped = "NO">
@@ -62,15 +62,18 @@
             ReferencedContainer = "container:Cube4Fun.xcodeproj">
          </BuildableReference>
       </MacroExpansion>
+      <AdditionalOptions>
+      </AdditionalOptions>
    </TestAction>
    <LaunchAction
+      buildConfiguration = "Debug"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
       launchStyle = "0"
       useCustomWorkingDirectory = "NO"
-      buildConfiguration = "Debug"
       ignoresPersistentStateOnLaunch = "NO"
       debugDocumentVersioning = "YES"
+      debugServiceExtension = "internal"
       allowLocationSimulation = "YES">
       <BuildableProductRunnable
          runnableDebuggingMode = "0">
@@ -86,10 +89,10 @@
       </AdditionalOptions>
    </LaunchAction>
    <ProfileAction
+      buildConfiguration = "Release"
       shouldUseLaunchSchemeArgsEnv = "YES"
       savedToolIdentifier = ""
       useCustomWorkingDirectory = "NO"
-      buildConfiguration = "Release"
       debugDocumentVersioning = "YES">
       <BuildableProductRunnable
          runnableDebuggingMode = "0">
diff --git a/Cube4Fun/Info.plist b/Cube4Fun/Info.plist
index d7934d2..fcb7211 100644
--- a/Cube4Fun/Info.plist
+++ b/Cube4Fun/Info.plist
@@ -9,7 +9,7 @@
 	<key>CFBundleIconFile</key>
 	<string></string>
 	<key>CFBundleIdentifier</key>
-	<string>nikolairinas.$(PRODUCT_NAME:rfc1034identifier)</string>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
 	<key>CFBundleInfoDictionaryVersion</key>
 	<string>6.0</string>
 	<key>CFBundleName</key>
diff --git a/Cube4Fun/src/Animations.swift b/Cube4Fun/src/Animations.swift
index 7fbd272..c4e1570 100644
--- a/Cube4Fun/src/Animations.swift
+++ b/Cube4Fun/src/Animations.swift
@@ -206,14 +206,14 @@ class Animations: NSObject {
     
     func addAnimation() {
         _animationArray.append(self.newAnimation())
-        println("append Animation. count: \(_animationArray.count)")
+        print("append Animation. count: \(_animationArray.count)")
     }
     func newAnimation() -> (NSMutableDictionary)  {
-        println("create new animation")
+        print("create new animation")
         return [AnimName: "Animation1", AnimKey: "1=anim1", AnimDuration: 10, AnimSpeed: 500, AnimFrames: self.newFrame()]
     }
     func newFrame() -> (NSMutableData) {
-        println("create new frame")
+        print("create new frame")
         return NSMutableData(bytes: _emptyFrame, length: 64)
     }
     func addFrame() {
@@ -232,18 +232,18 @@ class Animations: NSObject {
         // Insert empty frame at the current position
         
         // Get Array
-        var myData: NSMutableData = (self.getAnimation(_animationSelected)).objectForKey(AnimFrames) as! NSMutableData
-        var myDataBytes = self.getAnimDataSelected()
+        let myData: NSMutableData = (self.getAnimation(_animationSelected)).objectForKey(AnimFrames) as! NSMutableData
+        let myDataBytes = self.getAnimDataSelected()
 
         // Get startPositions of the selected frame
-        var frameStartPos = (self.getAnimationFrameID()-1)*64
+        let frameStartPos = (self.getAnimationFrameID()-1)*64
 
         // Append one empty frame at the end
         self.addFrame()
         
         var lastArrPos: Int = myData.length - 1
-        println("Framestart: \(frameStartPos)")
-        println("Framelength: \(lastArrPos)")
+        print("Framestart: \(frameStartPos)")
+        print("Framelength: \(lastArrPos)")
 
         // copy frames
         while ( lastArrPos >= frameStartPos + 64) {
@@ -260,18 +260,18 @@ class Animations: NSObject {
     
     
     func deleteDisplFrame() {
-        println("delete frame")
+        print("delete frame")
         
         // Get Array
-        var myData: NSMutableData = (self.getAnimation(_animationSelected)).objectForKey(AnimFrames) as! NSMutableData
-        var myDataBytes = self.getAnimDataSelected()
+        let myData: NSMutableData = (self.getAnimation(_animationSelected)).objectForKey(AnimFrames) as! NSMutableData
+        let myDataBytes = self.getAnimDataSelected()
         
         // Get startPositions of the selected frame
         var frameStartPos = (self.getAnimationFrameID()-1)*64
 
-        var lastArrPos: Int = myData.length - 1 - 64
-        println("Framestart: \(frameStartPos)")
-        println("Framelength: \(lastArrPos)")
+        let lastArrPos: Int = myData.length - 1 - 64
+        print("Framestart: \(frameStartPos)")
+        print("Framelength: \(lastArrPos)")
         
         // copy frames (fill deleted frame)
         while ( frameStartPos <= lastArrPos ) {
@@ -352,7 +352,7 @@ class Animations: NSObject {
     
     func setLEDColor(color: UInt8, led: Int) {
         //println("Led pressed: \(led)")
-        var myByte: [UInt8] = [color]
+        let myByte: [UInt8] = [color]
         let myData: NSMutableData = (self.getAnimation(_animationSelected)).objectForKey(AnimFrames) as! NSMutableData
         let bytePosition = NSMakeRange(((self.getAnimationFrameID()-1)*64)+led, 1)
         myData.replaceBytesInRange(bytePosition, withBytes: myByte)
diff --git a/Cube4Fun/src/AnimationsController.swift b/Cube4Fun/src/AnimationsController.swift
index 5a163af..09a1cfb 100644
--- a/Cube4Fun/src/AnimationsController.swift
+++ b/Cube4Fun/src/AnimationsController.swift
@@ -87,7 +87,7 @@ class AnimationsController: NSObject, NSTableViewDataSource, NSTableViewDelegate
     
     func tableViewSelectionDidChange(notification: NSNotification) {
         let view: NSTableView = notification.object as! NSTableView
-        println("klicked \(view.selectedRow)")
+        print("klicked \(view.selectedRow)")
         __animations.setSelectedAnimationID(view.selectedRow)
        
         _gameView.resetView()
@@ -97,7 +97,7 @@ class AnimationsController: NSObject, NSTableViewDataSource, NSTableViewDelegate
         
         //_selectedAnimation = view.selectedRow
         
-        println("klicked \(view.selectedRow)")
+        print("klicked \(view.selectedRow)")
     }
     
     func tableView(tableView: NSTableView, setObjectValue object: AnyObject?, forTableColumn tableColumn: NSTableColumn?, row: Int) {
@@ -174,7 +174,7 @@ class AnimationsController: NSObject, NSTableViewDataSource, NSTableViewDelegate
     
     @IBAction func exportAnimations(send: AnyObject) {
         var sendData: [UInt8] = [UInt8]()
-        println("Import button pressed")
+        print("Import button pressed")
         
         // for each animation
         for ( var i = 0; i < __animations.count(); ++i ) {
diff --git a/Cube4Fun/src/AppDelegate.swift b/Cube4Fun/src/AppDelegate.swift
index 9093d57..5e02ef9 100644
--- a/Cube4Fun/src/AppDelegate.swift
+++ b/Cube4Fun/src/AppDelegate.swift
@@ -77,7 +77,7 @@ class AppDelegate: NSObject, NSApplicationDelegate, NSTextFieldDelegate {
                 // probably doesn't have a createPDF() method.  self.createPDF(exportedFileURL)
             }
         } // End block
-        println("save pressed")
+        print("save pressed")
     }
     
     @IBAction func openDocument(sender: AnyObject) {
@@ -144,13 +144,13 @@ class AppDelegate: NSObject, NSApplicationDelegate, NSTextFieldDelegate {
         if myField.identifier == "IPADDR_FIELD" {
             if validIPAddress(myField.stringValue) {
                 __prefData.setIPAddr(myField.stringValue)
-                println("Changing ip address field")
+                print("Changing ip address field")
             }
         }
         if myField.identifier == "PORTNR_FIELD" {
             if validPortNr(myField.integerValue) {
                 __prefData.setPortNr(myField.integerValue)
-                println("Changing port number")
+                print("Changing port number")
             }
         }
     }
diff --git a/Cube4Fun/src/GameView.swift b/Cube4Fun/src/GameView.swift
index 68cb434..3df431f 100644
--- a/Cube4Fun/src/GameView.swift
+++ b/Cube4Fun/src/GameView.swift
@@ -42,7 +42,7 @@ class GameView: SCNView {
     }
     
     func resetView() {
-        println("Reset view")
+        Swift.print("Reset view")
         // goto first frame
         self.firstButtonPressed()
         
@@ -105,7 +105,7 @@ class GameView: SCNView {
         
         if let rootNode = self.scene?.rootNode {
             for childNode in rootNode.childNodes {
-                let buttonNode: SCNNode = childNode as! SCNNode
+                let buttonNode: SCNNode = childNode 
                 if buttonNode.name == "myNextFrameButton" {
                     buttonNode.hidden = !nextFrame;
                 }
@@ -277,7 +277,7 @@ class GameView: SCNView {
     func updateSpeedText() {
         if let rootNode = self.scene?.rootNode {
             for childNode in rootNode.childNodes {
-                let buttonNode: SCNNode = childNode as! SCNNode
+                let buttonNode: SCNNode = childNode 
                 if buttonNode.name == "mySpeedText" {
                     let geometry:SCNText = buttonNode.geometry as! SCNText
                     geometry.string = "Speed: \(__animations.animationSpeedInt()) ms"
@@ -320,7 +320,8 @@ class GameView: SCNView {
     
     override func rightMouseDown(theEvent: NSEvent) {
         let p = self.convertPoint(theEvent.locationInWindow, fromView: nil)
-        if let hitResults = self.hitTest(p, options: nil) {
+        let hitResults = self.hitTest(p, options: nil)
+//        if let hitResults = self.hitTest(p, options: nil) {
             // check that we clicked on at least one object
             if hitResults.count > 0 {
                 // retrieved the first clicked object
@@ -345,7 +346,7 @@ class GameView: SCNView {
                     }
                 }
             }
-        }
+  //      }
     }
     
     override func mouseDown(theEvent: NSEvent) {
@@ -357,7 +358,8 @@ class GameView: SCNView {
         
         // check what nodes are clicked
         let p = self.convertPoint(theEvent.locationInWindow, fromView: nil)
-        if let hitResults = self.hitTest(p, options: nil) {
+        let hitResults = self.hitTest(p, options: nil)
+//        if let hitResults = self.hitTest(p, options: nil) {
             // check that we clicked on at least one object
             if hitResults.count > 0 {
                 // retrieved the first clicked object
@@ -415,7 +417,7 @@ class GameView: SCNView {
                                 klickedColor = 253 // Maximum value
                             }else{
                                 klickedColor = UInt8(colorInt)
-                                println(klickedColor)
+                                Swift.print(klickedColor)
                             }
                         }
                         // Move arrows to the clicked position
@@ -513,7 +515,7 @@ class GameView: SCNView {
                 }
 
             }
-        }
+//        }
         
         super.mouseDown(theEvent)
     }
@@ -528,7 +530,7 @@ class GameView: SCNView {
         SCNTransaction.commit()
     }
     
-    func rotateCamera(var x: CGFloat, var y: CGFloat) {
+    func rotateCamera(x: CGFloat, y: CGFloat) {
         // Save the angle for reset
         startAngle = startAngle + y
         
@@ -614,7 +616,7 @@ class GameView: SCNView {
             super.keyDown(theEvent)
         }
         
-        println(theEvent.keyCode);
+        Swift.print(theEvent.keyCode);
         
         
         //super.keyDown(theEvent)
diff --git a/Cube4Fun/src/GameViewController.swift b/Cube4Fun/src/GameViewController.swift
index 574203a..92ede06 100644
--- a/Cube4Fun/src/GameViewController.swift
+++ b/Cube4Fun/src/GameViewController.swift
@@ -124,9 +124,9 @@ class GameViewController: NSViewController { // SCNSceneRendererDelegate
         // Open connection to the LED cube
         let established = CubeNetworkObj.openConnection(__prefData.ipAddr(), port: UInt32(__prefData.portNR()))
         if established {
-            println("connection established")
+            print("connection established")
         }else{
-            println("connection failed")
+            print("connection failed")
         }
         __animations.sendFrame()
 
@@ -153,7 +153,7 @@ class GameViewController: NSViewController { // SCNSceneRendererDelegate
         scene.rootNode.addChildNode(cameraNode)
         
         // place the camera
-        var newAngle = (CGFloat)(20.0)*(CGFloat)(M_PI)/180.0
+        let newAngle = (CGFloat)(20.0)*(CGFloat)(M_PI)/180.0
         //newAngle += currentAngle
 
 //        cameraNode.transform = SCNMatrix4MakeRotation(-0.5, 0, 0, 1)
diff --git a/Cube4Fun/src/PrimitivesScene.swift b/Cube4Fun/src/PrimitivesScene.swift
index 2c50b21..7028aa6 100644
--- a/Cube4Fun/src/PrimitivesScene.swift
+++ b/Cube4Fun/src/PrimitivesScene.swift
@@ -169,7 +169,7 @@ class PrimitivesScene: SCNScene {
   override init() {
     super.init()
     
-    var radius:CGFloat = 1.0
+    let radius:CGFloat = 1.0
     
     let yCount = 4
     let zCount = 4
@@ -239,11 +239,11 @@ class PrimitivesScene: SCNScene {
 
 
     var y:CGFloat = edgePosY
-    for row in 0..<yCount {
+    for _ in 0..<yCount { // row
         var z:CGFloat = edgePosZ
-        for depth in 0..<zCount {
+        for _ in 0..<zCount { // depth
             var x:CGFloat = edgePosX
-            for column in 0..<xCount {
+            for _ in 0..<xCount { // column
                 
                 let sphereGeometry = SCNSphere(radius: radius)
                 sphereGeometry.name = myIndex.description
@@ -277,7 +277,7 @@ class PrimitivesScene: SCNScene {
     
   }
     
-  required init(coder aDecoder: NSCoder) {
+  required init?(coder aDecoder: NSCoder) {
       fatalError("init(coder:) has not been implemented")
   }
 }
diff --git a/README.md b/README.md
index de871a3..db4217e 100644
--- a/README.md
+++ b/README.md
@@ -60,5 +60,5 @@ The application is written in a new apple programming language [Swift](https://d
 
 
 
-[logo]: http://cube4fun.net/public/Cube6-128j.png "Logo"
-[overviewIMG1]: http://cube4fun.net/public/Overview-Pic1.png "Overview"
+[logo]: http://cube4fun.net/images/Cube6-128j.png "Logo"
+[overviewIMG1]: http://cube4fun.net/images/Overview-Pic1.png "Overview"