Added doctype rule
Merge branch 'master' of https://github.com/onishiweb/Frontend-Rules into onishiweb-master

Conflicts:
	README.md
Merge branch 'onishiweb-master'
Update contribution instructions
Merge branch 'refs/heads/master' into regles-anthony

Conflicts:
	README.md
Rule 11: * { box-sizing: border-box; }

Border box is not default and required far more for resposive layouts than content-box. To save time worrying about when it's included, border-box everything. Use the compass mixin for backward compatibility upto and including IE8. Won't affect speed or anything - using * uses just as much memory as any other css.