Added geoFire library in javascript assets.
Added initial communication with Firebase. This includes connecting with the server, initial call to retrieve data when entering a zone and loading page.
add photoUrl module
added ability to sort initial photo set by createdAt time, with the most recent first.
add auto update on server change
Fixed bug to put latest photo at beginning. We were having problems
with having the latest photo appearing twice; once at the beginning
and once at the end. Got that squared away.

TODO: Jasmine Testing
Removed log files and tmp files.
Added .gitignore file.
Merge branch 'master' of https://github.com/pocket-gophers-2014/sugarsnap

Conflicts:
	tmp/pids/server.pid
Merge branch 'master' into geo_firebase

Conflicts:
	app/views/pages/home.html.erb
Merge pull request #3 from pocket-gophers-2014/geo_firebase

Geo Firebase