added ability to interface with echonest and seatgeek
using echonest, can obtain seatgeek_artist_id using songkick_artist_id
can query for ticket info from seatgeek using songkick artist id and date, nil is returned if event not found
minor formatting
Merge branch 'master' into event_tickets

Conflicts:
	app/assets/javascripts/controllers/mapController.js
Merge pull request #55 from pocket-gophers-2014/event_tickets

Event tickets