Added a new level to the logger.
Fix for issue #5

Reconnection delay is incremented everytime, up to 90 seconds delay.
Should be okay with the Twitch rates limit.
Client API is now in one block.
Prevent errors when 'options' is undefined.
Passing all options to sockets.
Graceful reconnection to Twitch is working properly.

Waiting for Twitch to provide more information about the rate limits
when gracefully reconnecting to server.

We don't know if we can join all the channels at once or if we are still
rate limited.
Version bump for beta.