Added option to bind to address other then localhost

Hello,

I am working from a headless VM on my laptop and have needed to serve the debugger from another address besides localhost. I am sure that other people have needed to do this also ( This is in fact the 2nd time I hacked this in ) ! 

I am sure that there is a much cleaner way to do what I did. I am not exactly a programmer, actually I am a cartoonist go easy on me, so I threw this together. 

I wanted though to still submit this because it seems like something that is useful to other people and is in other debuggers like Weinre and I hope that it works its way in.

Thank you for your work on this project! 

::cheers::