Update Procfile to use app.js instead of index.js
Externalize PORT as an enviornment variable
Merge pull request #34 from kmeurer/master

Fix file names
Merge pull request #35 from ryojiosawa/heroku

Update PROCFILE and externalize port as environment variable
Begin building User model. Add pg and bookshelf dependencies.
Add knex, set up bookshelf integration(in comments because database not yet deployed).
Merge rebase changes.