Support Meteor 1.3 with ES2015 modules and release to Npm

With Meteor 1.3, we get support for ES2015 Modules.
That means we can bring packages directly from Npm. It will also be the best practice. (there are still some important features that are missing in Npm that Meteor packaging system offers, like dependency solver, might be solved later on by Meteor working with Npm 3 and contributing to it once 1.3 is released).
This milestone is about separating the Angular2Meteor package to Npm modules so you could start a Meteor project and simply do:
npm install angular2
npm install angular2-meteor-data
meteor add angular2-html-templates (still need compilers to be part of Atmosphere)
etc....