Filter by tag capability

Check it out.

This will also give us the ability to weed out some similar tags like `Internationalization` and `i18n`. There were ab bunch of things in the sample directory that were never included in the page, so i removed them and added jquery (form google's cdn) and then write the javascript logic to filter.

Let me know what you think!

![screenshot 2014-01-16 18 52 14](https://f.cloud.github.com/assets/139261/1936361/5d410be8-7f09-11e3-832f-5f52de04a3e0.png)


Selected:
![screenshot 2014-01-16 18 52 29](https://f.cloud.github.com/assets/139261/1936363/618c9e88-7f09-11e3-97aa-3e9a7244c754.png)