Authentication approach for API 1.1

  1. Earlier used API 1 , but after 1 retirement need to migrate it to 1.1

  2. Above url gives bad authentication data - Bad Authentication data;code :215

  3. Which auth approcch i need to use Oauth 1 or application authentication
    Just i need to show latest 3 feeds from my twitter account.
    can you please help us authentication handling for above url