Add some contributors?

[coolaj86]

@tjfontaine Do you need some help maintaining this?

It looks like there are a number of great bug fixes and features just sitting wishing waiting.

I'm going to be using this in a product and I've run into some of the bugs and will probably soon run into some of the limitations. I'd be happy to start working through some of the bugs and pull requests.

I'm guessing a number of other committers would be willing to help as well. Thoughts?

FYI the page to add collabs has moved to https://github.com/tjfontaine/node-dns/settings/collaboration

[WoZ]

Hello! I've found that this module is unsupported and has some bugs. I may propose to use our module that was tested in production and highload environments. Also we have good unit and functional tests with 100% coverage, multi-records resolving and TTL support. Here it is: https://github.com/LCMApps/dns-lookup-cache