LinkedIn set-up
Login to LinkedIn and go to https://www.linkedin.com/developers/apps
Cick on “Create Application”.
Fill out the fields, accept the terms and create the app.
Once submitted go to the Auth page of your App. You will see your client keys there. Copy them to config/linkedin.php
On the same page, set the callback URL to “http://warbler.yourdomain.com/linkedin/callback".