1. Give him a linkedin button, clicking it the user will be redirected
to linkedin website for authentication.
2. once Authenticated and user returns back to my webpage, I need to
import the user's contacts from Linkedin.
3. Display the users's linkedin contacts in a page.
4. User selects some contacts and clicking submit, will send a invite
message to those selected contacts.
Is there any Gem or plugin in rails 3 to achieve this?