Create plot2.png

![plot2](https://cloud.githubusercontent.com/assets/6642157/2923991/ef54ba1a-d725-11e3-81a1-4c795ecbec9b.png)
![plot2](https://cloud.githubusercontent.com/assets/6642157/2924001/16ebf26e-d726-11e3-89ee-ed7bac10a964.png)