Search Tweets to display, nothing more. Which Authentication method should I use?


I am writing a CLI (Command Line Interface) application to show the latest Tweets for any given subject. Until recently, I was using the following URL to get the latest tweets on a topic:

Of course, now that the v1.0 API is depreciated, that no longer works! I have been reading about how I should use OAuth1 to use the REST API v1.1, but none of these use cases seem relevant for me:

Which should I use? There will be no posting of data to Twitter, I only need the last N Tweets for any given keyword.