Fix Regex package bugs Fixes #1

[Kellel]

Fix find by fixing the incorrect value in nil case
Re-write match to skip messy index logic
Also added two lines of tests that now work

[Kellel]

So the thing that you probably are going to complain about is that I had to change one of your tests to get this to work.

So here is the decision you have to make:
a. Put even more work into this package to only return subs in complex captures.
b. Accept the way golang returns regex matches and go ahead and merge is as is.