Switch over to recommending pushstate-server

It has a sane default port, gzip, and doesn’t aggressively cache index.html.
Perfect.

scripts/build.js

@@ -43,10 +43,9 @@ webpack(config).run(function(err, stats) {
     console.log('You can now serve it with any static server.');
     console.log('For example:');
     console.log();
-    console.log('  cd build');
-    console.log('  npm install -g st');
-    console.log('  st -p 8000 -i index.html');
-    console.log('  ' + openCommand + ' http://localhost:8000');
+    console.log('  npm install -g pushstate-server');
+    console.log('  pushstate-server build');
+    console.log('  ' + openCommand + ' http://localhost:9000');
     console.log();
   }
   console.log('The bundle is optimized and ready to be deployed to production.');

template/src/App.js

@@ -8,7 +8,7 @@ class App extends Component {
       <div className="App">
         <div className="App-header">
           <img src={logo} className="App-logo" alt="logo" />
-          <h2>Welcome to React</h2>
+          <h2>Welcome to React!</h2>
         </div>
         <p className="App-intro">
           To get started, edit <code>src/App.js</code> and save to reload.