Support all images

This is useful to create not animated LGTM.

## PNG

![tumblr_n5loilze0n1qz529lo1_400](https://cloud.githubusercontent.com/assets/18360/3063963/4697fde4-e24a-11e3-8692-bd98260c2a9d.png)

## JPG

![tumblr_n53k0jlwh71qz5nxmo1_500](https://cloud.githubusercontent.com/assets/18360/3063960/3e73731e-e24a-11e3-8557-21ac22cc8786.jpg)