Implemented an example modal

public/reducers/RootReducer.js

@@ -25,10 +25,12 @@ import { combineReducers } from 'redux';
 
 import LanguageReducer from './LanguageReducer';
 import MenuReducer from './MenuReducer';
+import ModalReducer from './ModalReducer';
 
 const rootReducer = combineReducers({
   language: LanguageReducer,
-  menu: MenuReducer
+  menu: MenuReducer,
+  modal: ModalReducer
 });
 
 export default rootReducer;