Add a new section "Integrating IPFS with Ethereum" to the README.md file.

[Lawan012]

Add a new section "Integrating IPFS with Ethereum" to the README.md file.

• Installation and usage:
  • Install IPFS: Follow the instructions on the IPFS installation page.
  • Initialize IPFS: Run ipfs init to initialize the IPFS repository.
  • Start the IPFS daemon: Run ipfs daemon to start the IPFS daemon.
  • Add files to IPFS: Use the command ipfs add <file> to add files to IPFS. This will return a CID (Content Identifier).
  • Store CID on Ethereum: Use a smart contract to store the CID on the Ethereum blockchain. You can use Solidity to create a contract that stores the CID as a string.
  • Retrieve files from IPFS: Use the command ipfs cat <CID> to retrieve files from IPFS using the CID.
  • Pinning files on IPFS: Use the command ipfs pin add <CID> to pin files on IPFS, ensuring they are not garbage collected.

---

For more details, open the Copilot Workspace session.

Originally posted by @Ramyromel in ethereum-lists/chains#6791