Adding a site-wide configuration option for tagline. The twitter theme will
still explicitly require a per-page tagline. Adding rvmrc to gitignore for those
of us still using Ruby Version Manager.
Merge pull request #25 from SegFaultAX/tagline-option

Site-wide configuration option for tagline
Adding Facebook Comments
Implement theme installer v 0.1.0
Update theme packager methods

Allow users to pass git url for a given theme to be installed. Use manifest to maintain compatibility. Add TomDoc comments
don't track _theme_packages directory

This should be treated as a staging directory
Namespace 'switch_theme'

Make sure to maintain backwards compatibility
Fix prompt complaining that directories already exist

When installing from a theme package we create an array of all files to be mirrored. We need to omit directories from this array since directories are recursively created for a given file. This needlessly raised 'directory already exist' errors which was annoying. - Also make error output friendlier
Themes are tracked and installed via the packager.

Detach themes from core JB framework.
Add changelog
update contributing instructions
bump version : 0.2.0
pulled changes from jekyll-bootstrap v0.2.0