displaying the status of the tutorial

src/reducers/index.js

@@ -1,6 +1,8 @@
 import { combineReducers } from 'redux';
 import workspaceReducer from './workspaceReducer';
+import tutorialReducer from './tutorialReducer';
 
 export default combineReducers({
-  workspace: workspaceReducer
+  workspace: workspaceReducer,
+  tutorial: tutorialReducer
 });

src/reducers/tutorialReducer.js

@@ -0,0 +1,25 @@
+import { TUTORIAL_SUCCESS, TUTORIAL_ERROR, TUTORIAL_CHANGE } from '../actions/types';
+
+
+const initialState = {
+  status: JSON.parse(window.localStorage.getItem('tutorial')),
+  change: 0
+};
+
+export default function(state = initialState, action){
+  switch(action.type){
+    case TUTORIAL_SUCCESS:
+    case TUTORIAL_ERROR:
+      return {
+        ...state,
+        status: action.payload
+      };
+    case TUTORIAL_CHANGE:
+      return {
+        ...state,
+        change: state.change += 1
+      }
+    default:
+      return state;
+  }
+}