app.jsx

import React from 'react';
import Template from 'react-template-helpers';

Template.Layout = ({content}) => (
  <div>
    <h1>My App</h1>
    <hr />
    <div>{content}</div>
  </div>
);

Template.Welcome = ({name}) => (
  <div>
    Hello, {name}.
  </div>
);