feerrenrut/windcast — pull request #4 by feerrenrut (2014-03-10 12:01:20+00:00)
Title: Add custom vertices

@peter-riggs Please review.

Arrows are now shown at each data point. They point in the direction the wind is heading.

![image](https://f.cloud.github.com/assets/3491346/2373279/6d2f248e-a84b-11e3-99f9-9a91f01b764d.png)