Merge pull request #30 from ejholmes/rdoc-task

Fix rdoc task
Why in the world would I have gitignored the Gemfile.lock?
Disable 1.9.2 build, add 2.0 build
Removing backwards compatibility warning.

I mean, it's been there for close to a year now.
Only block in bin/robut.
Robut::Connection#reply
Introduce a Sinatra app.
Add an example rackup file.
App -> Web
Tests
Just load Chatfile
Add some docs.