Add support for Flash Channels

[todofixthis]

Add support for creating and participating in Flash Channels

Refer to the Javascript library for requirements and reference implementation.

[DanielPollithy]

@todofixthis Is anybody already working on this?

[todofixthis]

Hey @DanielPollithy aye; have a look at #152 . I believe @jinnerbichler is looking for collaborators though (: