Updates and minor tweaks.

jquery.js - Updated to v1.11.0
_normalize.scss - Updated to v3.0.0
Updated default typographic scale for various selectors.
Updated NPM Packages and removed grunt-contrib-cssmin.

Note: Since Autoprefixer now preserves minification, grunt-contrib-cssmin is no longer needed because CSS can be compressed with Sass prior to running Autoprefixer.