Add packaging for Meteor.js, http://meteor.com

Hi Robert,

I'm a Meteor.js dev and volunteer package maintainer for [Meteor](http://meteor.com). I've learned about KeyboardJS [from StackOverflow](http://stackoverflow.com/a/8424875/1269037) and thought it would be great to have it in Meteor's package repository. Adding it to Meteor's ecosystem will expose it to many new devs (Meteor has 20k+ stars on GitHub), likely bringing in new testers and contributors.

This PR will let you directly publish updated versions of the library as they become available. All you have to do is create an account at https://meteor.com/ (click *SIGN IN*, then *Create account*). After you've done that, please let me know the name of the account, and I'll add you as a maintainer.

I've already published the current version of the package on [Atmosphere](https://atmospherejs.com/keyboardjs/keyboardjs) (Meteor's package directory). When you release new versions, you'll be able to publish them to Atmosphere with `meteor/publish.sh`.

Thanks & best regards,
Dan, [Meteor integrations team](https://github.com/raix/Meteor-community-discussions/issues/14)