title: Firebase dynamic link support custom parameters?
body: <p>I am writing a App for a Open Source Conference.</p>
  
  <p>Originally each attendees will receive different link via email or SMS like</p>
  
  <p><a href="https://example.com/?token=fccfc8bfa07643a1ca8015cbe74f5f17" rel="noreferrer">https://example.com/?token=fccfc8bfa07643a1ca8015cbe74f5f17</a></p>
  
  <p>then use this link to open app, we can know the user is which attendee by the token.</p>
  
  <p>Firebase release a new feature Dynamic Links in I/O 2016, it provide better experience for users.</p>
  
  <p>I had try that, but I can't find any way to pass the custom parameters (the token) in dynamic links, how to use the same link with different parameters to my users?</p>
  
  <p>Thanks.</p>