Fix typo
Edited HTML content after Dirk's edits post-review.
Moving article to top
Updating date
Merge pull request #335 from johnmccutchan/master

Fix typo
page was blank :(
Merge branch 'master' of github.com:html5rocks/www.html5rocks.com
Removed API warning from CSS Masking and updated publication date.
note on select
Merge branch 'master' of github.com:html5rocks/www.html5rocks.com
ADD
add IMAGES (SINCE I FORGOT!)
Clean up of headings so TOC generates correctly for CSS Masking.
Added image to match Dirk's id after adding to author DB.
Merge pull request #336 from mainroach/master

Add "CSS Paint times and page Render Weight" tutorial
pointless checkin.
Merge branch 'master' of https://github.com/html5rocks/www.html5rocks.com
sync and fix