Paths not matching after the first time

[chichilatte]

I know this repo is a bit old now, but I've found it very useful. One problem I've run into (which may be caused by a change in the behaviour of as3 RegExp since the last commit?):

In the com.jeremyruppel.routing.rules.RegExpRule class, pattern executing returns null after the first time it's run. This is because all patterns seem to have the g flag on by default, which means the execute starts from where it left off (pattern.lastIndex).

To fix this I've added the line _pattern.lastIndex = 0 to RegExpRule matches() and execute() methods. Will do a quick fork + pull request...