reorganized life using roots

[notslang]

• split up the index.html file into css, js, and html (closes https://github.com/cheeaun/life/issues/10)
• use Jade to concat all the files together properly & deal with custom stylesheets (so they load without waiting for js to inject a style tag)
• add a license (closes https://github.com/cheeaun/life/issues/17)
• compile everything into a single html file (closes https://github.com/cheeaun/life/issues/35 and removes the need for ajax requests)
• deploy to github pages with 1 command (thanks to roots)