Add method to update the URL of a GTRemote.
Document the properties.
Tidy up GTRemote.
Add fetchRefSpec methods to GTRemote.
Improved GTRemote docs.
Gonna need to import dat libgit2.
Add a GTRemoteSpec test.
Moar tests.
Merge remote-tracking branch 'origin/master' into remote_url_and_fetchrefspecs

Conflicts:
	ObjectiveGitFramework.xcodeproj/project.pbxproj
Improved GTRemote header docs.
wibble.
Be defensive about NULL refspecs.
Use [at] onExit to free the strarray
I heard you liked early returns.
Don't allow nils when updating the GTRemote.
fetchRefSpec is a constant.
such tests. so brave.
Better header doc for fetchRefSpecs.
Correct capitilisation for refspec.
How many ways can I mis-spell successfully?