[Q][GAPPS] Store and Hangouts installation topic

Hi,

Can anyone tell me in short descriptive lines how to install just Google Play Store and Google Hangouts without any other Google's apps?

I'm sure it can be done somehow. I tried following this post but then I saw a bunch of other stuff (Framework, lib, tts ... folders) which I don't want to install (space related) and honestly I don't know which of these dependencies are crucial.

Thanks in advance.
Milan