Consolidate testing gems in the Gemfile
Add the guard bin to the bin directory
Add file for user model specs
Add simple user creation test
Refactor user test to assist the addition of future tests
Add the shoulda-matchers gem to the project
Add spec to validate the presence of the username
Sanitize the test data
Require Username to be unique
Add spec for the User has many Players association
Require the root view to have a title for the page
Add tests for Player associations
Add tests for Game model
Add Tests for GameType model