title: Expressjs redirects user to a wrong route
body: <p>I have following registration page</p>
  
  <pre><code>form(method='post', action='users/register')
      .form-group
          label Name
          input.form-control(name='name', type='text',placeholder='Enter Name')
      .form-group
          label Email
          input.form-control(name='email', type='email',placeholder='Enter Email')
      .form-group
          label Username
          input.form-control(name='username', type='text',placeholder='Username')
      .form-group
          label Password
          input.form-control(name='password', type='password',placeholder='Enter Password')
      .form-group
          label Confirm Password
          input.form-control(name='password2', type='password',placeholder='Confirm Password')
      input.btn.btn-default(name='submit', type='submit',value='Register')
  </code></pre>
  
  <p>and on the server side, in users.js route, I have following code</p>
  
  <pre><code>router.post('/register', function (req, res, next) {
      // code here
  });
  </code></pre>
  
  <p>Now when I press <code>Register</code> button, the it redirects user to <code>users/users/register</code> route. <strong>Why and how can I solve this?</strong></p>
  
  <p>I am using <code>express 4.13.1</code></p>