fixed app.js with use strict, updated index.html with proper links for development js files
Merge branch 'master' of https://github.com/amsross/com-cobbletone

Merging in master changes to fix js development links in index.html
added in some initial structure to index.html
Merge branch 'master' of https://github.com/amsross/com-cobbletone

Merging new file structure changes
added a custom.less file