Add ability to deploy npm package (tarball)

See also: https://github.com/strongloop/strong-pm/pull/12
To elaborate, I don't care that much, my feeling on code is if you can delete it, and it doesn't change the behaviour, you should delete it so that I don't have to read it, but if you like to put new in front of things that are implicit constructors, thats OK by me, too. You could grep our code base and see if there is a winning style here!  I definitely defer to majority of lines on style stuff like this.