adding rule for ruby 1.9.3 to Gemfile
adding three initial group Roles: Admin Editor and Student
Add comments and change default application.sample.yml values
Expanding and clarifying installation instructions in the README.md
update mailer configs to use the ENV['API_CONSUMER'] variable which represents the current domain
ignore application.yml
Merge pull request #6 from FinalsClub/rebase

Documentation and tweaks