added yelp package.
added Yelp API to seed places list.
Merge branch 'master' into PopulatePlaces

Conflicts:
	client/views/place.html
	server/server.js
missed a merge conflict.
Merge pull request #14 from jared-schmidt/PopulatePlaces

added yelp package.
Merge branch 'master' of github.com:jared-schmidt/Brown-Bag into resetVotes