Add $ for variables in LHS of satisfies clause

### Story ###
- https://www.pivotaltracker.com/story/show/76450414

### Notes ###
- added $ before root criteria description in <code>satisifes</code> template if the criteria is also a variable

### Screenshot ###
![screen shot 2014-08-18 at 4 08 32 pm](https://cloud.githubusercontent.com/assets/456952/3957193/74552c6c-2713-11e4-98e7-b082e8466cda.png)