Bugfixes.

- Fixes #161
- Fixes #152
- Fixes #148
- Fixes #105
- Fixes #94
Update README for new Pusher JS synstax
Upgrade em-websocket to 0.5.1
Remove fiber callback in API and always return successful response. Fixes #165.
Merge pull request #164 from stevegraham/bugfixes

Bugfixes.