2.0.0

This is a pretty large update. Some features have been removed and a few new ones have been added. There are a couple breaking changes in this update, so any themes using an older version of the config will need to be adjusted. Check out Alpha for a working example of how to implement the config. Here's a breakdown of the changes:

• Removed grunt-banner
• Removed grunt-checktextdomain
• Removed grunt-webfont
• Removed grunt-wp-css
• Added support for Sass source maps
• Made task names more consistent
• Added grunt-version
• Added postcss-pxtorem
• Simplified the default Sass config
• Removed unused tasks
• Added some simple release tasks using grunt-version