Added fontawesome

Supported libraries:

• jquery: jQuery from github
• jquery_ui: jQuery UI from their website
• bootstrap: bootstrapJavascript helper functions for pygal from their website
• NEW fontawesome: Fontawesome from github
• fomantic_ui: Fomantic-UI from github (fork of semantic UI)
• semantic_ui: Semantic-UI from github
• masonry: Masonry from github
• pygal_js: pygal.js Javascript helper functions for pygal from github