Rewrote the Controller class in Swift (#216)

* Enabled Defines Modules for swift code

* Created bridge header, created swift Controller

-  Created Controller.swift
-  Created bridge header for use of objc in swift

* Finished porting Controller files to swift

* Added comments, created MoonlightUnitTest

-  Added comments for Controller.swift
-  Created MoonlightUnitTest for testing new class

* Started writing tests for ControllerUnitTests

-  General formatting
-  Wrote helper functions
-  Wrote tests for first four properties

* Finished writing Controller tests

* Removed commented out lines

Limelight/Input/Controller.swift

@@ -0,0 +1,26 @@
+//
+//  Controller.swift
+//  Moonlight
+//
+//  Created by David Aghassi on 4/11/16.
+//  Copyright © 2016 Moonlight Stream. All rights reserved.
+//
+
+import Foundation
+
+@objc
+/**
+ Defines a controller layout
+ */
+class Controller: NSObject {
+  // Swift requires initial properties
+  var playerIndex: CInt = 0           // Controller number (e.g. 1, 2 ,3 etc)
+  var lastButtonFlags: CInt = 0
+  var emulatingButtonFlags: CInt = 0
+  var lastLeftTrigger: CChar = 0      // Last left trigger pressed
+  var lastRightTrigger: CChar = 0     // Last right trigger pressed
+  var lastLeftStickX: CShort = 0      // Last X direction the left joystick went
+  var lastLeftStickY: CShort = 0      // Last Y direction the left joystick went
+  var lastRightStickX: CShort = 0     // Last X direction the right joystick went
+  var lastRightStickY: CShort = 0     // Last Y direction the right joystick went
+}