Fixed Login page redirect issue

Changed path testing from URI to URI.AbsolutePath
This avoids the issue where the URL will be different for every user / session

Added note about the FaceBook tracking, this should be optional as it affects an apps privacy statement
updating version to 0.8.2
Adding the Facebook App based Login and Sample
Adding the FacebookLoginSimulator
Adding 0.8.5 alpha version
Fixed LoginAsync() throwing unhandled exception on WP8 using MonoGame/XNA.
Merge pull request #28 from DDReaper/LoginRedirectFix

Fixed Login page redirect issue
Merge pull request #42 from DanielSidhion/loginasync-fix

Fixed LoginAsync() throwing unhandled exception on WP8 using MonoGame/XNA
Merge branch 'master' of https://github.com/facebook-csharp-sdk/facebook-winclient-sdk