added chat feature
Gemfile now contains 'gem capybara'
rebased with Armando, then added a heroku deploy debug tip and a few instructions for running the app locally to doc/README_FOR_APP.md
set chatpage.js.erb to run after chatpage finished loading
moved chat form to a partial
updated chat_backend.rb to support multiple chat pages and tweaked chatpage.js.erb to make path name adaptable also added test view
Merge pull request #5 from p-tricky/chat_feature

Chat feature