Update index.html and cube.html:
* adjust code in index.html so it's more readable
* add 'Options' section to index.htlm
* add code examples to gh-pages-code-examples direcotry
* add custom stylesheet for cube.html (cube.js docuemntation)
Fixing CSS3 word notation
Updates:
* update documentation: add more examples
* update cube.js: focusOn works better (finds shorter way to targeted side)
Updates:
* add script auto-generating navigation in the index page
* add Cube Texture, Compatibility, and Documentation sections to the index page