2.2/meta length count

A copy-writing contractor of mine was saying that there should be a counter to let him know how long the meta description is. If the description is over 20 characters the count will be green. Once it goes over 160 the description is considered too long and the count will turn red.

![meta-count](https://cloud.githubusercontent.com/assets/1425304/3250578/8b17a0c0-f1a7-11e3-80a5-d75ec1a3b2e9.gif)