Added support for subscribing only a component
Added support for limite streams BW
Added support for specify image format when getting a video frame
Apis for use new subscribe functionality
Added options param y ruby nuve api
Publish/subscribe streams without data
options in createRoom is a default parameter now
Merge pull request #38 from lainor/cleanup

options in createRoom is a default parameter now
Merged with master
Resolved some errors during last merge
Merge remote-tracking branch 'origin/cleanup'