Optimize images

The images were pretty large so I ran them through all the perf. It's approx. 40% speed gain. According to [perfmap](https://github.com/zeman/perfmap) only Google Maps are significantly slowing stuff down. But the site is still loading under 2 secs so :+1: 

![screen shot 2014-10-13 at 11 18 55](https://cloud.githubusercontent.com/assets/375731/4611402/1d32278c-52ba-11e4-824d-e2e576a4afcb.png)