title: express-validator Break validator chain
body: <p>I am using express-validator plugin for express    </p>
  
  <pre><code>var input = {
              'username': {
                  notEmpty: true,
                  isEmail: {
                      errorMessage: 'Invalid Email.'
                  }
              },
              'password': {
                  notEmpty: true,
                  errorMessage: 'Invalid Password' // Error message for the parameter
              }
          };
  
      req.checkBody(input);
      var errors = req.validationErrors();
      if (errors) {
          console.log(errors);
      }
  </code></pre>
  
  <p>If I pass username as empty output is </p>
  
  <pre><code>[ { param: 'username', msg: 'Invalid param', value: '' },
    { param: 'username', msg: 'Invalid Email.', value: '' },
    { param: 'password', msg: 'Invalid Password', value: '' } ]
  </code></pre>
  
  <p>how to brake the chain if anyone of the validation fails.</p>