Created the feature file for requiring the gem.
Updated the README with a little bit more information.

Licensing, requirements and the means for contributing to the project.
Added the basic files needed to distribute a Ruby gem.
Modify Qpid::Proton::Messenger to expose an EM::Channel type.

This channel can be used to register for notifications on events.
Added an echo_server example app.

This app will receive a message and, if a reply-to address is specified,
will send back the original message to that address.