First Pull Request

Testing how to do a pull request

- Added line to gemfile to pull latest version of ruby-adjudicator from github
- Added secret key to devise initializer per http://stackoverflow.com/questions/18080910/devise-secret-key because recent commit broke it
- Added semi-useless user test to test rails validation of uniqueness of email

(just a small commit to test pull requests and test ability to write a test as my role for the time being will likely be limited to documentation as test coverage)