How to add additional display (view mode) for all node types? Firstly, I've seen this question, have followed the steps in the answer by FranCarstens to no vail.

To clarify: I want to add custom views to all content types. (as a side question, would be nice to know how to target a specific node type, if possible).

I've created the modules, enabled it but it doesn't show as an option in any of my content types. 

What am I missing?

Thanks!
The programm way from related quedtion should work, but it doesn't, you can try to use the following module: https://www.drupal.org/project/entity_view_mode


  The Drupal 7 successor to Build modes which will allow administrators to define custom view modes for entities.