Deployer modifications

Migrations.js

const Registration = artifacts.require("Registration");
const fs = require('fs');
const path = '/../src/metaData.js'; // need to create src folder first


module.exports = async function (deployer) {
  await deployer.deploy(Registration);
  const instance = await Registration.deployed();
  fs.writeFile(
    __dirname + path,
    `const ADDRESS = ${Registration.address};\nconst ABI = ${JSON.stringify(Registration.abi)};\nmodule.exports = {\nADDRESS,\n ABI\n};`,
    (err) => {
      if(err) throw err;
      console.log('Contract initialie data has been saved!'); 
    }
  )
}