react-router v2.0.0系でURLにハッシュ値を付けないようにする ref: http://qiita.com/iwata-n@github/items/6608a9e11adc13b913ca

file0.js

import React from 'react';
import ReactDOM from 'react-dom';
import { Router, useRouterHistory } from 'react-router';
import { createHashHistory } from 'history';

import AppRoutes from './Routes';

const appHistory = useRouterHistory(createHashHistory)({ queryKey: false })

ReactDOM.render(
  <Router history={appHistory} onUpdate={() => window.scrollTo(0, 0)}>
    {AppRoutes}
  </Router>
, document.getElementById('main'));