Implemented component without jQuery

Took a shot at making this work without jQuery + plugins (see #5).

Seems to work fine for Chrome and Firefox. 

Also cleaned up dependencies in `package.json` as they really were not making sense at the moment.

I'd use [JSX spread attributes](https://gist.github.com/sebmarkbage/07bbe37bc42b6d4aef81) as advised on [Deprecating transferPropsTo](https://gist.github.com/sebmarkbage/a6e220b7097eb3c79ab7):
```
<textarea {...this.props} />
```
or if we are going to stay with es5:
```
React.DOM.textarea(Object.assign({}, this.props))
```
as `Object.assign` polyfill is now shipped with React 0.11.

Note that we don't really need to pass `this.props.children` cause `<textarea />` doesn't do anything with them (content is passed as `value` prop), not sure why I did that.