typo

"Instance" needed to be pluralized. 

Made the edit in two places (line 101 & 117):

> Finds all _**instance**_ of components

to

> Finds all _**instances**_ of components

![image](https://cloud.githubusercontent.com/assets/2935356/3789209/54c04b2a-1a93-11e4-8a49-3760bb73ebfb.png)