Updated font to 3.1.1

Also included all the icons into the list of FAIcons.
Updated HTML to show off all icons

Included all the new icons since version 2.0 into the preview page of
all the Font Awesome icons that are accessible in the category.
Merge pull request #20 from leberwurstsaft/update-font-3-1-1

Update font 3.1.1
Merge remote-tracking branch 'upstream/master'