WIP Pulling in graph code from forma-globe project

Issues: clipping path looks wrong, and axes should be fixed to 0-4 instead of depending on data.

![vmware fusionscreensnapz019](https://f.cloud.github.com/assets/428784/1294329/f2c0a556-307c-11e3-9a39-e9dc60a2d1fa.png)