title: Prestashop Web Service API keeps asking for authentication
body: <p>I am having this problem I enabled the webservice from prestashop and I can access it if I write the URL directly passing the parameter from post method 
  <a href="http://underwearstudio.mx/pruebas/api?&amp;ws_key=" rel="nofollow">http://underwearstudio.mx/pruebas/api?&amp;ws_key=</a>"mykey".</p>
  
  <p>But If I try to access without passing the ws_key as parameter it keeps asking me to authenticate.</p>
  
  <p>From what I read when authentication is prompted you need to use the API key as username and leave the blank password, but it just keeps prompting the authentication.</p>
  
  <p>What can I do? </p>
  
  <p>I was trying to follow this tutorial.(<a href="http://doc.prestashop.com/display/PS15/Chapter+2+-+Discovery+-+Testing+access+to+the+web+service+with+the+browser" rel="nofollow">http://doc.prestashop.com/display/PS15/Chapter+2+-+Discovery+-+Testing+access+to+the+web+service+with+the+browser</a>)</p>
  
  <p>Any help would be greatly appreciated</p>