Restructure app a bit.
 - Remove routing, external view
 - Add basics of Foursquare service
Implement Foursquare service
Change 4sq API to hit /search instead of /explore
Update Angular to 1.1.5 (moved to app/vendor b/c Bower doesn't have it)
Tweak Foursquare API a bit
Add call to Foursquare on page load