Version 0.7.0

Added more stability to the connecting phase. Add testing.

Fix gruntfile not cleaning and building from the right file.

Add unsubscribe. Add utility functions. Update README.

Fix README mistake.

Major cleanup of pre connection state queue. Further error handling. …

…Added double offer handling.

Add more cross browser support. Add hacks for Chrome.

More bug fixes.

Fixed up the library and added fixes for more edge errors. Clean up b…

…uild scripts and build new version of the library.

Create basic working version of rtc library.