Update to React 0.12.2

templates/javascript/main.js

@@ -0,0 +1,10 @@
+var <%= scriptAppName %> = require('./<%= scriptAppName %>');
+var React = require('react');
+var {DefaultRoute, Route, Routes} = require('react-router');
+
+React.renderComponent((
+  <Routes location="history">
+    <Route path="/" handler={<%= scriptAppName %>}>
+    </Route>
+  </Routes>
+), document.getElementById('content'));