Move routes, views, and controllers to their own folder inside `js/apps/routename`.

Reorganize scss structure to mirror the js structure.
Add handlebars helpers and move scss mixins to a more appropriately named 'helpers' folder.
Add a placeholder rule.
Correct url to grunt-neuter github repo.
Merge pull request #10 from ff0000/feature/js-apps

Reorganize JS and SCSS folders.