Add Travis CI file
Install twitter and shoulda gems
Update year on license file
Add Trader and Currency models
Update Rakefile take update_traders
It now tweets out the rate if it has been changed
This is code needs to be clean up but im tired
Removed pry and add ruby version to use
Update Gemfile.lock
Add pry and rspec-mocks gem to gemfile
Add Tweet service
Add Tweet Decorator
  Add spec helper
  Add TraderUpdater service
Add spec helper to model specs
Add Tweet, TweetDecorator and TraderUpdater service to currencyja
Refactot Rakefile update_traders tasks into services
Fixed typo in TweetDecorator
Merge branch '2.0' of https://github.com/kenrick/currencyja into 2.0