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
use Roman numerals
fix font sizes
use Roman Caps font
utere lingua Latina
fix incorrect layout
update README
use htmlpreview to play
add screenshot
fix 128 tile font size
Merge branch 'master' into gh-pages

Conflicts:
	index.html