Add CONTRIBUTING.md file

NMF-earth / carbon-footprint

Calculate your carbon footprint 🏭👣 from food, transport, purchases, fashion, electricity and digital activities like streaming, NFT or blockchain.

https://nmf.earth

GNU General Public License v3.0

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Closed syauqy closed 3 years ago

syauqy commented 3 years ago

Add CONTRIBUTING.md file.