Fixed #8, Now accepting more characters in the chat filter.

The chat filter now nolonger is having issues with characters:

()\/.?-

The issue was the Regex was being created in string format and the
\ characters used to escape the character class were being consumed
in the string parsing and then were not escaping the character class.
Merge pull request #13 from Reanmachine/issue-8

Fixed #8, Now accepting more characters in the chat filter.