chore(index.html): added social media meta tags
Karma runner port to 9101, fixing watch issues

Credit to @helmi03.

Tested on:
 - MacOS 10.7.5 (Karma 0.8.5, NodeJS 0.10.4)
 - Ubuntu 12.04 (Karma 0.8.5, NodeJS 0.10.10)
 - Arch Linux (Karma 0.8.5, NodeJS 0.10.10)

Fixes #37. Fixes #20.