first commit - setup routes
Create user model and API.
created Contact, ContactShare models, migrations
Implemented associations between users, contacts, shares
Set up Contacts controller and API.
Add ContactShares controller and method for getting user's own and shared contacts.
Implement contact favoriting over API.
Implement adding contacts to groups.
Added comments by user on contacts.
Remove unnecessary files.
Merge week 4, day 2 project Contacts API.

Conflicts:
	.gitignore
Move Contacts API to right directory.