user history method.
Merge branch 'master' of https://github.com/npatki/Yelp-Challenge
Merge branch 'master' of https://github.com/npatki/Yelp-Challenge
Merge https://github.com/npatki/Yelp-Challenge
Begin methodology.
Merge branch 'master' of https://github.com/npatki/Yelp-Challenge

Conflicts:
	report/report.pdf