Update index.html

Added Google analytics tracking code
Update readme.md
Update README.md
Update index.html
Update index.html
Update styles.css
Update index.html
Update index.html
Update styles.css
Update styles.css
Update styles.css
Update index.html
Update styles.css
Update styles.css
Update index.html
Update index.html
Update index.html
Updated plugin JS files

Rearranged some code blocks to optimize performance. Included the option
to debounce the resize event (turned on by default) with Paul Irish's
small snippet.

Updated readme and demonstration page.
Updated styles.css
Updated styles.css