Revert "Disable slack notification"
Revert "Disable slack notification"

This reverts commit 116ca944ae1042bdb4c0aadce42994f905d0640f.

CocoaHeadsBrasil/CocoaHeadsApp,igorcferreira/CocoaHeadsApp,CocoaHeadsBrasil/CocoaHeadsApp,igorcferreira/CocoaHeadsApp,BrunoMazzo/CocoaHeadsApp,igorcferreira/CocoaHeadsApp,BrunoMazzo/CocoaHeadsApp,CocoaHeadsBrasil/CocoaHeadsApp,BrunoMazzo/CocoaHeadsApp