Rename renderQuitView
Generate a powerUp item upon start of game and create a marker on the map
Merge branch 'master' of https://github.com/RebootJeff/phone-tag and implement invisible power up item

Conflicts:
	public/models/map.js
Merge branch 'master' of https://github.com/RebootJeff/phone-tag

Conflicts:
	public/models/game.js
	public/views/AppView.js
Change map's minZoom back to 19
Merge branch 'master' of https://github.com/RebootJeff/phone-tag

Conflicts:
	public/templates/game.html
Merge pull request #31 from Ken123777/master

Implement Invisible Power-up item