Readme tutorial link 496

Fixes #496 

I'm not terribly happy with the layout. I wanted to this message to be right at the top, but placing it below the coveralls image does not look good.

I would welcome suggestions.

![screen shot 2014-08-08 at 11 21 48](https://cloud.githubusercontent.com/assets/415486/3855499/f69f6eb6-1ee5-11e4-8f26-7e28318cdfce.png)