Fix for current sort value appearing in dropdown.

Add README giving instructions on how to use this repository.

Instead of including the jQuery and Cart.js Javascript libraries directly in our theme source files, add them as NPM dependencies in package.json and update our Gruntfile to compile them together into a single script.js file.

Turn our two CSS files into separate SCSS files, and add a master styles.scss file that imports them. Compile styles.scss into styles.css.liquid during our theme build process.

Add a Gruntfile and NPM package.json to run our theme build tasks.

Restructure our directory layout into `/theme` and `/.build` directories in preparation for adding a Grunt-powered theme build process.

Replace our manually written Ajax Javascript with the Cart.js library.

Provide more feedback to the user on Ajax Add to Cart: update the cart total in the navbar, and make a Checkout Now link visible from the product page after successful add.

Provide some basic feedback to the user by changing the add to cart button message and disabled status during the Ajax call.

Add Javascript to intercept the form submission on the product page and make an Ajax POST request with the form data instead.

Rename #product-form to #product-form-wrapper and move the #product-form id attribute to the <form> object itself, so that we can refer to the actual form object directly from Javascript.

Add Ajax support for links.

Add Ajax support when changing selects.

Add Javascript convenience to reload when changing view or sort.

Add pagination support.