Rails App with Twitter API Integration

The app should be very simple, allow users to create accounts using their Twitter account (User A), input another user's name (User B) and return a list of users who User B follows and who follow User A.

In simple terms, the web app should allow users to see the overlap between people in their network (People who follow them) and another user's network (Users they follow).

- Must use Rails
- Must use PostgreSQL
- Must use Twitter API