Submodule update (aesthetic update to WebAuthenticationOptions enum)
Ignore emacs temp files.
Removed some Windows-specific stuff.
For compatibility, provide a bunch of small Windows classes related to event handling.

SelectionChangedEventArgs (needed by Facebook.Controls.Picker),
RoutedEvent and RoutedEventArgs are provided on Windows in the
System.Windows namespace.
Added small event-handling classes.

For Picker. Provided by Facebook.Controls