Update docs for deprecated prop-types

Author: Slumber86

docs/rules/no-deprecated.md

@@ -22,6 +22,8 @@ React.createClass({ /* Class object */ });
 const propTypes = {
   foo: PropTypes.bar,
 };
+
+import {React PropTypes} from 'react';
 ```
 
 The following patterns are not considered warnings:
@@ -31,4 +33,6 @@ ReactDOM.render(<MyComponent />, root);
 
 // When [1, {"react": "0.13.0"}]
 ReactDOM.findDOMNode(this.refs.foo);
+
+import PropTypes from 'prop-types';
 ```