Run this commands when cloning this repo to install node.js dependencies:

1. npm init
2. npm install solc web3 mocha ganache-cli dotenv @truffle/hdwallet-provider

Update test script in package.json to be "test":"mocha"

Create .env file in root directory, add your metamask mnemonic like this:
METAMASK=your_mnemonic_directly_without_any_comma

To compile the contract: node compile.js
To run testcases: npm run test
To deploy the contract to Rinkby testnet: node deploy.js

In order to interact with deployed contract, copy the deployment address and paste it in
remix with "injected web3" as blockChain VM using MetaMask extension and click "AtAddress" to load the 
contract from blockChain.

Note: use -g to install npm packages globally.