docs: function deployAuctionRegistrar(deployer, tld) {
    var rootNode = getRootNodeFromTLD(tld);
  
    // Deploy the ENS first
    deployer.deploy(ENS)
      .then(() => {
        // Deploy the HashRegistrar and bind it with ENS
        // The last argument `0` specifies the auction start date to `now`
        return deployer.deploy(Registrar, ENS.address, rootNode.namehash, 0);
      })
      .then(function() {
        // Transfer the owner of the `rootNode` to the HashRegistrar
        return ENS.at(ENS.address).then((c) => c.setSubnodeOwner('0x0', rootNode.sha3, Registrar.address));
      });
  }