This project includes an Angular app and an API. It is a clone of Daftmonk/generator-angular-fullstack. Simply clone it run npm install && bower install and then grunt serve.
You should also either run mongod in your machine or set environment variable MONGOLAB_DEV_URI to a valid mongodb standard URI.
Example: mongodb://<dbuser>:<dbpassword>@ds012345.mongolab.com:12345/garaj
If you set your NODE_ENV variable to production you should set MONGOLAB_URI to a valid mongodb standard URI.
You can set these variables by duplicating server/config/environment/local.env.sample.js and renaming it to local.env.js. This file is ignored by git, so do not worry, you will not be sending your credentials.
More can be found here about yeoman generators and deploying to heroku: Daftmonk/generator-angular-fullstack