Merge pull request #14 from NYULibraries/chore/update-ruby-version

Chore/update ruby version
Remove the settings submodule since we'll be using figs
Remove the RailsConfig gem and lock in the change
Remove the RailsConfig initializer
Add the Figs gem to the Gemfile and lock it in
Figsify Eshelf

Enjoy your figs, indeed!
Remove the RailsConfig default settings
Load up the Figs environment for the application
Use the Figs environment variable for the secret token
Use the Figs environment variables for databases
Change the name to the travis database to "eshelf_test"
Use the Figs environment variables for New Relic
Clean up whitespace via Atom
Use the Figs environment variables for Gauges
Use the Figs environment variables for the Authpds settings
Use Figs for the approved EShelf CORS origins
Remove the sunspot config file since I'm not really sure why it's there
Use the default domain for the time being
Use the Figs environment variables for the institution settings
Use formaggio to deploy and lock in the change