12th - Added SVG support.

Gruntfile.js - Added Grunticon and SVGmin tasks.
README.md - Added Grunticon and SVGmin task info.
head.html - Added Grunticon loader.
header.html - Moved body tag and browser-alert from head.html to
header.html.
project.json - Added svg_images variable.
package.json - Added Grunticon and SVGmin tasks.
icons - Added assets/images/icons folder.