Switching to use rbenv instead of rvm
Updating the gemfile for ruby 2.1.2
Added new setup commands

Noted that we use rubyenv
Bundle exec for our commands

Added bundle exec to our commands since we are using bundler to manage our gems
Added ruby version to the Gemfile
Merge branch 'development' of https://github.com/ijustwanttocode/whyeatthings into development
Updating branch by merging in master