Fixed uname error on OS X.
Responds to updates to user state properly, rather than overwriting previous messages
Allow other PCM sample rates and channels, using ruby-libsamplerate
Queue Stream: stream directly from a ruby Queue of audio data
Update README.rdoc
Merge remote-tracking branch 'elliot/master'

Conflicts:
	lib/mumble-ruby.rb
	lib/mumble-ruby/audio_stream.rb
	lib/mumble-ruby/client.rb
	mumble-ruby.gemspec