openzeppelin-contracts/migrations/2_deploy_contracts.js

//var Ownable = artifacts.require("ownership/Ownable.sol");

// NOTE: Use this file to easily deploy the contracts you're writing.
//   (but make sure to reset this file before committing
//    with `git checkout HEAD -- migrations/2_deploy_contracts.js`)

module.exports = function(deployer) {
  //deployer.deploy(Ownable);
};