Add basic package info

[peteruithoven]

Add basic package info to package.json, this could be done with npm init.

Let's use mayor version 0, until the public api settles down. (NPM init defaults to 1.0.0) More info:

Major version zero (0.y.z) is for initial development. Anything may change at any time. The public API should not be considered stable.

From: http://semver.org/

[peteruithoven]

I'm personally confused about the name property and what JSPM expects see: jspm/jspm-cli#249 (comment)

To allow publishing to NPM it recommends adding a format option to package.json, See: Configuring Packages for jspm:npm. But I'm not sure whether we should use esm or es6, see: systemjs/systemjs#617

We probably also want to add a directories.lib config.

[peteruithoven]

I did a quick directories.lib test and this doesn't seem to give any issues.