(DEPRECATED)
This was an old app to to showcase the use of the simple_token_authentication gem.
A new way of authenticating an app using a simple token is available here.
I have since found that the problem this gem tries to solve is too simple to justify a gem of its own. I implemented an alternative "gem-free" version of token authentication in another repo. I favor this solution and recommend everyone to take a look at it as opposed to jumping right in to using the aforementioned gem.