Use the same favicons as the Bootstrap docs.
Fix html5shiv and respond urls.

Use the same as the Bootstrap docs.
Enforce LF like the Bootstrap repository.
Update Bootstrap to v3.0.3.
Use the non-www link.
Compress images with kraken.io.

Savings: 723.36 KB.
Specify <meta http-equiv="X-UA-Compatible" content="IE=edge">.
Update _config.yml.

Disable pygments since no code highlighting is used.
Also exclude README.md from the out dir.
Fix validation errors.
Remove `type="text/javascript"` since it's the default.
Remove the unused _includes/colophon.html.
Use the https links for github and Twitter.
Move stuff that belong to the footer to footer.html.