Added a new contribution - perphelper

Hello Wayne,

My name is Joe. Thanks for writing this utility. Dave Peticolas put me onto it when I was working at Lucasfilm.

I found that a lot of my use of perp (thanks to Dave Peticolas for putting me onto it :D) ended up being a lot of file management for the services I was getting perp to monitor. To ease this, I wrote a little management tool to make it a little easy. 

The tool, I call perphelper, is a command line tool to help list and add services. Take a look, see what you think and if your interested, it would be great if you could merge this into the mainline. Of course, I don't know what your thoughts are about having a contribs directory and all that. I figured it would be easier to have it in there than a separate github location for people to search out.

My pull request adds a contrib directory, where I have added a nice and easy management tool for setting up services to be attached to perp for monitoring. I also updated to v2.07 just for my own consistency :)

Would be great to get your feedback nonetheless.

Cheers,

Joe.