allow React.Component type argument

if pass multi connected components to renderReactRedux(),
required to wrap a element. because react-redux Provider
should enforce a single child.

(e.g.)
renderReactRedux(
  'MyComponent.js',
  <div>
    <ConnectedComponentA />
    <ConnectedComponentB />
  </div>,
  configureStore
);

src/index.jsx

@@ -7,7 +7,11 @@ import hypernova, { serialize, load } from 'hypernova';
 function buildProvider(connectedComponent, store) {
   return (
     <Provider store={store}>
-      {React.createElement(connectedComponent)}
+      {
+        React.isValidElement(connectedComponent)
+          ? connectedComponent
+          : React.createElement(connectedComponent)
+      }
     </Provider>
   );
 }