Added more GSOC Documentation.
Updated README to reflect changes in source.
Expanded GStreamer Documentation.

Began filling out some Farstream documentation, but with an incomplete
system I cannot confirm a number of things, and as a result the
documentation remains incomplete.
Patched gstreamer demo launcher file.
Added incomplete call demo.

Awaiting review from #telepathy to identify the cause of being unable to
catch incoming call-channels.