Added redux reducer and store for calling from the login page.

client/app/components/redux/store.jsx

@@ -0,0 +1,7 @@
+import { createStore, applyMiddleware } from 'redux';
+import thunk from 'redux-thunk';
+import logger from 'redux-logger';
+import reducer from './reducer.jsx';
+
+const store = createStore(reducer, {}, applyMiddleware(thunk, logger));
+export default store;