Escape asterisks and parantheses in routes

[iglrob]

This lib is truly awesome! After using it for a while I came across a certain problem: Asterisks and parentheses are valid components of an URL but reserved in this lib. (Refer to this IETF-spec)

If it was for illegal characters in the URL I would expect the user of the lib to escape them. But since those are valid characters I think the lib should take care of escaping them.

[iglrob]

I checked the errors in Travis.They are not due to changes made in the pullrequest but in some sub-dependency of prebuilt PhantomJS.