Removed unneeded test folder.
Added rspec-rails to Gemfile.
Generated rspec folder.
Added shoulda matchers.
Created tests for channels associations.
Added simplecov gem.
Changed channels association to belongs_to user.
Added testing for Showtime model.
Added testing to Message spec.
Added testing for validations and associations for User model.
Added Factory Girl.
Merge pull request #4 from nicolejpaz/testing

Added models testing