v2.2.0

CSS

• #106: Darken the $brand-blue variable to make it AA compliant for contrast.
• #112: Darken the $brand-orange variable to make it AA compliant for contrast.
• #115: Removed obsolete -webkit-validation-bubble styles (unavailable since Chrome 28).
• #118: Update SCSS lint properties.
• #124: Darken $brand-gray from #999 to #666 for color contrast (and apply it to .text-muted).

Docs

• #58: Minor grammar and spelling fixes.
• #120: Update readme's installation method to use Bower's CLI install.
• #122: Update bower.json to remove moot version field.