nnnick/Chart.js — pull request #151 by raunaqgupta (2013-06-24 02:34:49+00:00)
Title: Added line chart property "onlyHorizontalGridLines" for horizontal only grid lines

Added new boolean property: **onlyHorizontalGridLines** to toggle between
full grid and horizontal only grid lines.

![image](https://f.cloud.github.com/assets/623670/693166/8a9b24a6-dc76-11e2-93ae-77ec2224ea18.png)