Meteor integration and README improvements

Hi Federico,

As you might know, the [Meteor](http://meteor.com) community loves Bootstrap and your Material Design theme. We had [a wrapper package](https://github.com/html5cat/bootstrap-material-design/) that @html5cat asked me to help with, so I'm submitting a PR that integrates Meteor packaging directly, along with Travis and Grunt tests.

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. (`fezvrasta` is taken because it's the namespace of the organization owning the package).

I've already published the current version of the package on [Atmosphere](https://atmospherejs.com/hammer/hammer) (Meteor's package directory). When you release new versions, you can publish them to Atmosphere with `grunt meteor`.

Thanks & best regards,
Dan & the [Meteor integrations team](https://github.com/raix/Meteor-community-discussions/issues/14)