Update Ruby to 2.1.1

Previously, the application was running on Ruby 2.1.0, which was also causing the Travis build to break and was also opening the application up to some potential security vulnerabilities. The application has been updated to run on the latest version of Ruby (2.1.1).

https://trello.com/c/jYMG9vYd

![](http://www.reactiongifs.com/r/joke.gif)