Render a component multiple times React.js

This is a code for a simple counter.

However, when i Render the view i don't get any output. Please tell me what is wrong with the code.

The button is pressed and a counter is incremented and is rendered onto the screen.

 var Title = React.createClass({

  getInitialState : function(){
    return {count:0};
  },
  increment : function(){

    this.setState({count:this.state.count+this.props.incVal});
  },
  render: function() {
    return (
      <div>
        <h1 >Count : {this.state.count}< /h1>
        <button onClick={this.increment} >Increment</button>
      </div>
    );
  }
});




var MultiButton = React.createClass({
  render : function (){
    return(
      <Title incVal={1}/>
      <Title incVal={5}/>
    );
  }
});

ReactDOM.render( <MultiButton /> ,
  document.getElementById('example')
);