Merge pull request facebook-csharp-sdk#46 from sanjeevdwivedi/master

Resetting the session object when renewing tokens

Adding the FacebookLoginSimulator

Merge pull request facebook-csharp-sdk#34 from masterdimar/master

Fix geting version number from Windows Phone

Merge pull request facebook-csharp-sdk#34 from masterdimar/master

Fix geting version number from Windows Phone

Added build target.

deleted extra snk

Updated to Microsoft.Bcl.Async 1.0. Closes facebook-csharp-sdk#16. Ve…

…rsion to 0.5.0-alpha

Version to 0.4.0-alpha

Version to 0.3.0-alpha

Version to 0.2.1-alpha