ember-i18n npm module

Closes #31

Problems with the current system:

 * The [Ember bower package](https://github.com/components/ember) doesn't have versions earlier than 1.0. (At some point in the past it did, because I was able to install 0.9.7.1 with bower.)
 * I've had trouble getting Bower to recognize valid versions of jQuery with the `~` operator
 * Bower doesn't have `devDependencies` so if I were to add JSHint or Mocha, they would have to be *runtime* dependencies, which is wrong.

### TODO

- [x] remove component.json
- [x] unignore `components/`
- [x] add package.json
- [x] ignore `node_modules/`
- [x] add jshint
- [x] add `grunt.js`
- [ ] change `jasmine.yml` to point to npm versions of libraries (optional)
- [ ] switch jasmine to Mocha
- [ ] remove `Rakefile`