Make index.html pass the W3C HTML5 validator

- hgroup has been removed from the HTML5 spec:
  http://lists.w3.org/Archives/Public/public-html-admin/2013Apr/0003.html
- An img element must have an alt attribute
- "&" has to be escaped as &amp; (this includes "&" in URLs!)
- Escape Unicode character
Add CSS3 Box Alignment Module
Add Compositing and Blending Module
Add Masking Module
Merge pull request #56 from DasBlub/gh-pages

Make index.html pass the W3C HTML5 validator
Merge pull request #61 from deepj/box-alignment

Add CSS3 Box Alignment Module
Merge pull request #62 from deepj/compositing

Add Compositing and Blending Module
Merge remote-tracking branch 'upstream/gh-pages' into masking

Conflicts:
	tests.js
Merge pull request #63 from deepj/masking

Add Masking Module
Update paypal email
Clean up some mess from Masking test
Merge pull request #64 from deepj/masking

Clean up some mess from Masking test
Add missing CSS 3 Conditional Rules Module
Merge pull request #53 from deepj/conditional

Add missing CSS 3 Conditional Rules Module
Fix #17
Add Shapes Module Level 1
Merge pull request #67 from deepj/fix-gh17

Fix #17
Merge pull request #66 from deepj/shapes

Add Shapes Module Level 1
Add Filter Effects Module Level 1
Merge pull request #68 from deepj/filter-effects

Add Filter Effects Module Level 1