v1.0.4, 8/20/2013 --
Making `html_attr` and `body_attr` safe, so they render with &quot;.
Cleaning up the fabfile, so you can specify whether to purge the h5bp repo or not.
Allowing consumer to define a new name for "main.js" using `main_js` template variable.

v1.0.3, 8/20/2013 -- The `html_tag` solution does not work, so moving to a template variable {{ html_attr }}. Also adding the {{ body_attr }} template variable.

v1.0.2, 8/20/2013 -- DON'T USE THIS VERSION (`html_tag` BUGGED). Icons updated again and adding a new block `html_tag` in base.html, so you can add things like a manifest file.

v1.0.1, 8/15/2013 -- Incorporating commit cd981e52f7cb96260f9703002885db154a10ebfb, updating the apple icons.

v1.0.0, 8/13/2013 -- Initial release.