Android : 3-dots android menu on a phonegap app - trigger by native android controls

I would like to create a native-like '3 dots' menu on my Android app, which I created with Phonegap.

I was looking for a css snippet, or some guidelines on how to implement the traditional '3 dots menu', preferably for bootstrap 3, but did not find anything.

Also, I would like to allow the user to trigger this menu using the native android controls, is it possible? how complicated should it be? (did not find any information via Google)