fix the problem of fontawesome icons not showing
Merge pull request #40 from teloon/fix-icon

Added fontawesome icons.
fixed missing google analytics
Merge pull request #45 from flypiggy/bugfix

fixed missing google analytics
Allow user to provide MD5 hash for Gravatar

Calculating the Gravatar URL based on the email address
in Javascript is convenient, but having the email address
in plaintext in the resulting HTML file might not be what
everybody wants.

This adds support for providing the MD5 hash value via
the email_md5 entry in _config.yml.

As a side-effect, we don't need to include md5.js if the
hash value is already known.
Merge pull request #47 from breiti/email-md5

Allow user to provide MD5 hash for Gravatar
Improved readability and css for code sharing
Added social icon for Quora