added a top margin of 45px to the .hero-unit h1

This brings the <h1> on the landing page down until the baseline is level with the logo. Main purpose is to deal with the awkward line break on your tab line. Like so: 

<img src="http://dl.dropbox.com/u/6682410/tabula.png">
Merge pull request #51 from sinker/master

tweaked the landing page h1 to fix line break in tagline.