title: PhantomJS - Upload a file without submitting a form
body: <p>Is it possible to upload a file to a certain page using PhantomJS without submitting manually the form? I think something is possible using the Content-Type: multipart/form-data.</p>
  
  <p>The example on <a href="https://github.com/ariya/phantomjs/blob/master/examples/imagebin.js">https://github.com/ariya/phantomjs/blob/master/examples/imagebin.js</a> is working fine, but I want to send directly the file in the POST request without interacting with any element.</p>
  
  <p>Any suggestion?</p>
  
  <p>Thank you very much</p>