install

npm install

make sure you have installed Ganache client and Truffle v4.1.7

test

truffle test

deploy on development

truffle deploy

deploy on kovan testnet

Before deploy on kovan, you can export MNEMONICS, make sure your terminal history is safe.

export MNEMONICS="<your mnemonics>"
truffle deploy --network=kovan

run external javascript to interactive with your smart contract.

truffle exec scripts/exec/send_coin.js