Add:
    templates/layout.html
        -Add `header`, `body`, and `footer` divs, for greater modularity and to
        floor the footer.

    static/sass/main.sass
        -Add styling to the new footer, which is always floored to the bottom of
        the page (even when an otherwise insufficient amount of content is
        present).

Add:
    static/sass/main.sass
        -Complete `template/layout.html` positioning rules.
        -Add some styling to the footer.

    static/sass/_variables.sass
        -Add `SASS` partial to contain all project-wide variables.

    templates/index.html
        -Add project-wide layout template (should've been packaged into the
        previous commit).

Add:
    static/sass/_mixins.sass
        -Add transition classes.

    static/sass/main.sass
        -Add base styling for footer, center column.

    templates/index.html
        -Add foundation `div` tree to `body`, and footer contents.

Add:
	bitshift/assets.py
		-add module that contains functions to be called from inside the
		templates/ Jinja HTML files -- currently contains tag(), which generates
		an HTML asset tag based on a filename.

	bitshift/config.py
		-add Flask configuration module.

	static/(sass/main.sass, css/main.css)
		-create isolated directory for SASS files; compiled CSS files will be
		stored in static/css.

	static/css/_mixins.sass
		-add SASS partial to contain mixins (globally relevant to the project's
		styling).

	templates/layout.html
		-add various metadata.