Update categories.xml to include jQuery version  1.9
.css(): Add new signature for 1.9
Add .finish() entry for jQuery 1.9
Merge branch 'master' into jquery-1.9

* master:
  Add entry for $.parseHTML
  Add deprecation notices for error load, unload events
  Add entry for jQuery.parseHTML()
  :checked selector: Clean up examples
  .addClass(): Trivial cleanup.
  jQuery.contains(): Clarify language.
  Mark .toggle() event as deprecated in 1.8
  Removing <em> tags from example code on live() entry - Closes gh-165
Change "looks like HTML" text and add reference to $.parseHTML()

Closes #220
Add a few new (as of 1.9 selectors)
Mark 1.9 removed methods as removed.