text: import {combineReducers} from "redux";
  import courses from "./courseReducer";
  import authors from "./authorReducer";
  import ajaxCallsInProgress from "./ajaxStatusReducer";
  import authentication from "./authenticationReducer";
  import {routerReducer} from "react-router-redux";
  
  const rootReducer = combineReducers({
    authentication,
    courses,
    authors,
    ajaxCallsInProgress,
    routing: routerReducer
  });
  
  export default rootReducer;
  