Update README; add guides to docs

examples/index.js

@@ -2,7 +2,7 @@ import { MediaProvider, matchMedia } from 'react-media-queries'
 import App from './components/App'
 import createGetter from 'react-media-queries/lib/createMediaQueryGetter'
 import createListener from 'react-media-queries/lib/createMediaQueryListener'
-import React from '../src'
+import React, { AppRegistry } from '../src'
 
 const mediaQueries = {
   small: '(min-width: 300px)',
@@ -10,10 +10,14 @@ const mediaQueries = {
   large: '(min-width: 500px)'
 }
 const ResponsiveApp = matchMedia()(App)
-
-React.render(
+const WrappedApp = () => (
   <MediaProvider getMedia={createGetter(mediaQueries)} listener={createListener(mediaQueries)}>
     <ResponsiveApp />
-  </MediaProvider>,
-  document.getElementById('react-root')
+  </MediaProvider>
 )
+
+AppRegistry.registerComponent('Example', () => WrappedApp)
+
+AppRegistry.runApplication('Example', {
+  rootTag: document.getElementById('react-root')
+})