render comments on submit

js/react/entry.js

	constructor(props) {
		super(props);
		this.state = {data: []}
		this.handleCommentSubmit = this.handleCommentSubmit.bind(this);
	}
	handleCommentSubmit(comment) {
		// TODO: Send to server and rerender
		console.log("Got a comment: ", comment);
		let comments = this.state.data;
		let newComments = comments.concat([comment]);
		this.setState({data: newComments});
		// TODO: Send to server
	}
	componentDidMount() {