How to Disable Gatekeeper in macOS Sierra

How to Disable Gatekeeper in macOS

To resolute Gatekeeper issues on macOS Sierra we prepared a script to automatically unlock images and programs (annoying image/application is damaged messages pretending you cannot open things).
In cases you prefer a manual installation the image file in this folder could be used. For that reason you might have to partially or completely disable Gatekeeper checks.
Option I
For a certain application run in Terminal:
sudo xattr -rd /Applications/

Option II
To disable checks globally run in Terminal:

sudo spctl --master-disable

TNT team