Hook up the http so we actually talk to jenkins.

Used this to figure out how to talk http POST:
   http://nodejs.org/api/http.html
and this to figure out how to talk to jenkins:
   https://wiki.jenkins-ci.org/display/JENKINS/Parameterized+Build

Auditors: ben, chris

Test Plan:
Fingers crossed.  Will deploy to toby and try it out!