Correct typo on line 2


![screen shot 2014-11-04 at 2 42 52 pm](https://cloud.githubusercontent.com/assets/3811225/4909531/26679938-6474-11e4-98e3-64143a09b817.png)
![screen shot 2014-11-04 at 2 43 09 pm](https://cloud.githubusercontent.com/assets/3811225/4909533/29a61908-6474-11e4-929d-c7fc040c569b.png)

Line 2: "Thats" --> "That's"