added webfont and updated index page

added "uni 05_53" font face definitions and webfonts per James'
recommendation. still trying to find a license to include with the
source repository for good measure.
updated index.html with proper doctype and element ordering
added wrapper around phaser canvas for centering (text-center method)
added authors block to footer
added credits block to footer
various style tweaks
Merge branch 'master' into feature/html_refactor