title: SyntaxError: Use of const in strict mode?
body: <p>I am trying to login on facebook.com with selenium-webdriver.</p>
  
  <pre><code>var webdriver = require('selenium-webdriver'),
      By = require('selenium-webdriver').By,
      until = require('selenium-webdriver').until;
  
  var driver = new webdriver.Builder()
      .forBrowser('firefox')
      .build();
  
  driver.get('https://www.facebook.com/login');
  driver.findElement(By.id('email')).sendKeys('****');
  driver.findElement(By.id('pass')).sendKeys('*****');
  driver.findElement(By.id('loginbutton')).click();
  
  driver.findElement(By.linkText('Settings')).then(function(element) {
    console.log('Yes, found the element');
  }, function(error) {
    console.log('The element was not found, as expected');
  });
  driver.quit();
  </code></pre>
  
  <p>It is giving error:</p>
  
  <blockquote>
  <pre><code>/home/shubham/node_modules/selenium-webdriver/index.js:25
  const builder = require('./builder');
  ^^^^^
  SyntaxError: Use of const in strict mode.
      at Module._compile (module.js:439:25)
      at Object.Module._extensions..js (module.js:474:10)
      at Module.load (module.js:356:32)
      at Function.Module._load (module.js:312:12)
      at Module.require (module.js:364:17)
      at require (module.js:380:17)
      at Object.&lt;anonymous&gt; (/home/shubham/Music/amazon_login/test_22_4_16/sel_login.js:1:79)
      at Module._compile (module.js:456:26)
      at Object.Module._extensions..js (module.js:474:10)
      at Module.load (module.js:356:32)
  </code></pre>
  </blockquote>
  
  <p><code>node --version</code>  v0.10.37</p>
  
  <p><code>npm  --version</code>1.4.28</p>
  
  <p><code>protractor --version</code>  Version 3.2.2</p>
  
  <p>selenium-webdriver@2.53.1</p>