Add Meteor.js support

Hey Jorik,

I'm a Meteor.js dev and volunteer package maintainer for Meteor. We've had a few wrapper packages for Hammer, and thought it'd be best if the integration comes straight from the source - hence this PR.

I went ahead and reserved the [`hammer` namespace on Atmosphere](https://atmospherejs.com/hammer) (Meteor's package repository) for you, and published the package at https://atmospherejs.com/hammer/hammer. Please shoot me an email at ddascalescu@gmail.com so I can transfer the account to you.

After that's done, all you'll have to do when publishing a new version is to run the `meteor/publish.sh` script.

Best regards,
Dan