Fix GitKit Go Quickstart: ClientID <-> ProjectID are swapped

[Matthias Linder]

Couldn't find a "Send Feedback" button on the doc pages, so writing it down here:

The Quickstart pages for Go tell the user to enter the ClientID ("123...@apps.googleusercontent.com") for the OAuth2 client into the "audiences" field for the gitKit.ValidateToken() method. This, however, is wrong -- it is instead asking for the projectID ("foo-my-project").

• https://developers.google.com/identity/toolkit/web/quickstart/go#step_2_configure_the_quick-start_app -- "clientID: your OAuth CLIENT ID under the Client ID for web application"  ... it's actually passed into the audiences parameter
• https://github.com/googlesamples/identity-toolkit-go/blob/master/favweekday/favweekday.go#L45 is the incorrectly named field
  
• Java apparently had a similar issue in the past: http://stackoverflow.com/questions/34948889/gitkit-java-client-library-trouble-verifying-token-signature-invalid-audience

[Jin Liu]

Thanks for the report Matthias! We will update the quickstart doc and sample app shortly.

On Tuesday, April 5, 2016 at 11:33:11 AM UTC-7, Matthias Linder wrote:

Couldn't find a "Send Feedback" button on the doc pages, so writing it down here:

The Quickstart pages for Go tell the user to enter the ClientID ("1231232@apps.googleusercontent.com") for the OAuth2 client into the "audiences" field for the gitKit.ValidateToken() method. This, however, is wrong -- it is instead asking for the projectID ("foo-my-project").