Add coffee-rails as a dependency.

disconnect method added to singleton server

 Update README to use coffeescript  all the time

Update readme to remove js from example, copies structure from https://github.com/rails/actioncable-examples

small typo on README.md

celluoid -> celluloid

Update readme instructions for js

Update readme to include requiring the cable js file and rename the example file for creating App.cable not conflict with the action cable js libs

README.md code block fix

Fix double ` ```ruby ` within the same code block.

update README to include creating the ApplicationCabel::Channel

update documentation to use websocket protocol