Rearranged sections

To improve layout and scanability
Add CNAME file to enable custom URL.
Merge pull request #9 from rackerlabs/add-cname

Add CNAME file to enable custom URL.
Design updates

- text edits
- swap map for office photo
- add rush photo at bottom
- edit about rackspace text
CSS updates

- adjust various spacing
- adjust for added photos
Add clearfix to photos
Add map link
Merge pull request #10 from rackerlabs/adjusting-text

Design and text updates