title: Create Registrant using GoToWebinar
body: <p>I want to create a registrant for a webinar using GoToWebinar API's. I came across the code at <a href="https://stackoverflow.com/questions/9273576/gotowebinar-api-php/9499747#9499747">gotowebinar api php</a>
  I provided my username and password to get the oAuth object. This worked perfectly fine as described. 
  Now I want to do something like this:
  I have a Registration page. When user fills in the required details, selects the 'register to webinar' option and clicks on 'Submit', I want to enrol him for that webinar using CreateRegistrant API. The problem is, I am not able to get the oAuth object without providing username and password. Is there a way to pass this programatically and create oAuth object?</p>