Create CONTRIBUTING.md
Create CONTRIBUTING.md

Needs to improve..
metatron-app/metatron-discovery,metatron-app/metatron-discovery,metatron-app/metatron-discovery,metatron-app/metatron-discovery,metatron-app/metatron-discovery,metatron-app/metatron-discovery,metatron-app/metatron-discovery