http://www.lukefabish.com/react-introduction/

  <script src="https://unpkg.com/react@15/dist/react.js"></script>
  <script src="https://unpkg.com/react-dom@15/dist/react-dom.js"></script>
  <script src="https://unpkg.com/babel-standalone/babel.min.js"></script>

Props: this.props: Come from outer environment
State: this.state: captures the state of this, change with setState
	setState should only come from self
Event Handlers: Used to modify state typically, to modify my state from children
	send the children a handler with appropriately bound this