title: Invalid or missing api_id in clickatell
body: <p>i am trying to integrate clickatell  SMS gateway in my web system. i make free test account on clickatell and create SMS REST integrations , from SMS REST integrations i get API key , am use this api key in <a href="http://api.clickatell.com/http/auth?user=USERNAME&amp;password=PASSWORD&amp;api_id=API_KEY" rel="nofollow noreferrer">http://api.clickatell.com/http/auth?user=USERNAME&amp;password=PASSWORD&amp;api_id=API_KEY</a>
  but i am getting this error "ERR: 108, Invalid or missing api_id".Please help me in getting valid API key , 
  thanks</p>