Fixed 'match' rule of form validation.

[Demo]
- Problem: http://jsfiddle.net/seonggwang/m0sq4qL2/2/
- Solution: http://jsfiddle.net/seonggwang/m0sq4qL2/4/

Problem occurred when parameter contains bracket in 'match'.
Like "match[user[password]]"

![Firefox Console](https://cloud.githubusercontent.com/assets/1792867/4788075/201c8fe0-5db5-11e4-8ec3-78d4b4706f36.png)