Fixing Issue #69: AcquireTokenInteractiveHandler throws System.IndexOutOfRangeException when empty extraQueryParameters is passed.
Fixing two issues related to SSO mode in WinRT and WinPhone:

Native projects calling AcquireTokenAndContinue in winphone throws exception #72
Handling of SSO and non SSO modes in ADAL RT needs improvement #74
Merge pull request #73 from MSOpenTech/bugs

Fixing bugs