Store best score in localStorage

Dependency injection and hide best score for incompatible browsers
Fix win/over in local
localStorage fallback
Merge remote-tracking branch 'upstream/master' into best-score

Conflicts:
	index.html
	js/application.js
	js/html_actuator.js
Add launcher icon for :apple: devices
Hide the browser UI on :iphone:
Add metadata images to meta folder for consistency
Fix relative path issue - github.io vs. CNAME
Add non-vendor prefixed animation CSS for Internet Explorer
Ensure the Try Again button actually disappears when selected in Internet Explorer
Save and load game state when closing and opening the page.
Add PointerEvent support for Internet Explorer
Fix spacing style issues in my changes.
Use querySelector instead of getElementsByClassName
Merge pull request #22 from ghoullier/master

Use querySelector instead of getElementsByClassName
fix merge conflict
add small code tweaks
mobile tweaks for best score
remove analytics from master branch
add mentions to readme