content: 'use strict';
  
  import React, { Component } from 'react';
  // import ReactDOM from 'react-dom';
  import { Route, Router, hashHistory, IndexRoute } from 'react-router';
  import StartScreen from './StartScreen';
  import TrackerNavBar from './TrackerNavBar';
  import MeasureRefPlane from './MeasureRefPlane';
  import MeasureCircle from './MeasureCircle';
  import CircularityResult from './CircularityResult';
  
  
  export default class App extends React.Component {
     constructor(props) {
       super(props);
  /**
  *Creates a router and sets the single paths for the single components
  *it also sets the history route
  *the index route sets the component which will shown, if the html page opens
  */
     }
    render() {
      return (
        <Router history={hashHistory}>
          <Route path="/" component={TrackerNavBar}>
            <IndexRoute component={StartScreen} />
            <Route path="/startscreen" component={StartScreen} />
            <Route path="/measurerefplane" component={MeasureRefPlane} />
            <Route path="/measurecircle" component={MeasureCircle} />
            <Route path="/circularityresult" component={CircularityResult} />
          </Route>
        </Router>
      );
    }
  }
  