Add startup-images for the iPhone.
Made animframe_polyfill.js JSHint compliant

Reformatted a bunch to make JSHint happy.
Merge pull request #115 from iirelu/jshint-compliance

Made animframe_polyfill.js JSHint compliant
Merge pull request #112 from Josso/startup-image

Add startup-images for the iPhone
code cleanup
Merge pull request #158 from janschoenherr/patch-1

code cleanup
added generate difficult tile
added difficult tile selector
Merge branch 'master'