added support for multiple controllers

Limelight/Input/Controller.h

@@ -0,0 +1,22 @@
+//
+//  Controller.h
+//  Limelight
+//
+//  Created by Diego Waxemberg on 2/1/15.
+//  Copyright (c) 2015 Limelight Stream. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+
+@interface Controller : NSObject
+
+@property (nonatomic) int playerIndex;
+@property (nonatomic) int lastButtonFlags;
+@property (nonatomic) char lastLeftTrigger;
+@property (nonatomic) char lastRightTrigger;
+@property (nonatomic) short lastLeftStickX;
+@property (nonatomic) short lastLeftStickY;
+@property (nonatomic) short lastRightStickX;
+@property (nonatomic) short lastRightStickY;
+
+@end