Added Contact info

Fixes #757 

Note: this is different from the stuff Tim's working on which is about updating the Report Abuse/Contact Owners workflow. This is just a simple master Contact Us page.

Attached <del>are two images</del> is an image of the Contact Us link. <del>and the Fork Me on GitHub banner</del>

![Contact Us](https://f.cloud.github.com/assets/7574/255253/4bf90330-8c08-11e2-82ff-c700fff081f9.PNG)