message: add chain id instructions to meta mask frontend docs
diff: @@ -37,19 +37,27 @@ Hardhat implements its own Ethereum local testnet called Hardhat Network. In ord
  1. Install the [MetaMask extension](https://metamask.io/)
  2. After installing `node_modules` with `yarn install`, run the interface in `net-emissions-token-network/interface` with
  +
  ```bash
  yarn react-app:start
  ```
  +
  3. In a separate terminal, start a local Hardhat Network in `net-emissions-token-network/` with:
  +
  ```bash
  npx hardhat node
  ```
  +
  4. In a separate terminal, deploy the contracts in `net-emissions-token-network/` to the local Hardhat Network with:
  +
  ```bash
  npx hardhat run --network localhost scripts/deploy.js
  ```
  -5. Back in the browser, navigate to `localhost:3000`. In the MetaMask extension, change the network from Ethereum Mainnet to _Localhost 8545_.
  -6. Press _Connect Wallet_ in the interface to connect to your MetaMask wallet.
  +
  +5. In the MetaMask extension, change the network from Ethereum Mainnet to _Localhost 8545_.
  +6. Within the settings for localhost in metamask, be sure that the Chain Id is set to 1337.
  +7. Back in the browser, navigate to `localhost:3000`.
  +8. Press _Connect Wallet_ in the interface to connect to your MetaMask wallet.
  You should now be connected to your local testnet and be able to interact with contracts deployed on it through the React application.
  