Fixing ellipsis on repo descriptions.

Without `white-space: nowrap;`, your text breaks and flows to the next line at the first space rather than getting an ellipsis like you want ;)
added title attributes to divs with ellipsis so that you can hover over it to see the full title
Merge pull request #1 from nfriedly/master

Fixed your ellipsis and aded titles so that the full text would appear on hover