anchor.diff:                  navigator.geolocation.getCurrentPosition(function (position) {
                     var latitude = position.coords.latitude;
                     var longitude = position.coords.longitude;
  -                  update(latitude, longitude);
  +                  update(response, latitude, longitude);
                   });
                 } else {
  -                update(-23.558362, -46.635381);
  +                update(response, -23.558362, -46.635381);
                 }
                 FB.api("/me/picture?width=50&height=50",  function(response) {
                   $('#profile-picure').attr({'src': response.data.url});
  
positive.code:               navigator.geolocation.getCurrentPosition(function (position) {
                var latitude = position.coords.latitude;
                var longitude = position.coords.longitude;
                update(latitude, longitude);
              });
            } else {
              update(-23.558362, -46.635381);
            }
            
            FB.api("/me/picture?width=50&height=50",  function(response) {
  
negative.code:     <script src="//ajax.googleapis.com/ajax/libs/jquery/1.10.1/jquery.min.js"></script>
      <link rel="stylesheet" type="text/css" media="all" href="/assets/app.css" />
      <script type="text/javascript">
        function update (response, at, lng) {
          $.ajax({
              method: 'POST',
              url: '/api/users',
  