More complete Parenthesize issue

More complete opening quote after parenthesize
Issue #7
Merge pull request #9 from jamienk/patch-3

(" -> this quote should be open; but it wasn't. This fixes it.
Issues:
- What if one wants to put an opening parenthesis in quotes?
- What about braces and square brackets?
Have to think about these... no obvious solution exists. Just merging this for time being.