Merge pull request #11 from nickzheng/patch-1

Update 4-async-middleware.js

Author: willrstern

4-redux/src/js/4-async-middleware.js

@@ -21,7 +21,7 @@ const reducer = (state=initialState, action) => {
       return {...state, fetching: false, error: action.payload}
       break;
     }
-    case "FETCH_USERS_ FULFILLED": {
+    case "FETCH_USERS_FULFILLED": {
       return {
         ...state,
         fetching: false,