Fixing IE8 issue

IE8 does not support rgba. Adding fall-back rgb color to the hero-unit class.
IE8 Does not support background-color: rgb... changing to hex representation.
Merge branch 'master' of github.com:zschallz/zachzimm.com

Conflicts:
	website/dev/css/bootstrap.css
IE8 does not support background-color: rgb, only background-color: #hexrep... using hex representation.