Revamped the WebserciceCalls class
Merged SPLogin, GameAuthentication and WebserciceCalls  into a new single class called SP
Lots of minor fixes and modifications
Warnings Fix
NGUI Updated to the latest
Some updates from the last build on the master branch
Added default App Id
Merge branch 'SDKOverhaul' of https://github.com/SocialPlay/CloudGoodsSDK into SDKOverhaul

Conflicts:
	Assets/SDKTests/SocialplaySDKUnitTests/GivePlayerItemTest.cs
	Assets/SocialPlay-SDK/Scripts/Web/IServiceCalls.cs
	Assets/SocialPlay-SDK/Scripts/Web/WebserviceCalls.cs
	Assets/TestLitJsonConverter.cs
	Assets/TestSecureCalls.cs