Fixed features search issue

This one character change seems simple but figuring it out wasn't actually ;)

When setting the `global` attribute on the `RegExp` Object, it keeps track of the `lastIndex` where a match occurred, so on subsequent matches it will start from the last used index, instead of 0, and thus causing the issue with "ES6" search for instance.

BUG=#128,#132

![image](https://cloud.githubusercontent.com/assets/634478/3552313/26ebdae8-08f5-11e4-9610-b3b894d48d55.png)