add 'extend' snippet
Add 'include' snippet
add the possibility to avoid the type inside "link css" not necessary in HTML5
add role 'snippet'
add "data-" snippet
add 'form' snippet
add 'aria-*' snippet
add 'itemprop' snippet
add 'itemscope' snippet
add 'itemtype' snippet
Revert "add 'aria-*' snippet"

This reverts commit 8b260bfdd1d6a56bd6db3505dd634a24f941229c.
add 'aria-*' snippet
add 'aria-*' snippet
Removed check protocol for Google-analitycs
Updated version of Jquery 1.9.1
Updated doc