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ballot.sol

pragma solidity ^0.5.0;

import "github.com/OpenZeppelin/zeppelin-solidity/contracts/access/roles/MinterRole.sol";
import "github.com/OpenZeppelin/zeppelin-solidity/contracts/token/ERC20/ERC20.sol";

contract CoinFactory is MinterRole, ERC20 {
  function createCoin(uint _coinBought, address clientWalletAddress) public onlyMinter {
    _mint(msg.sender, _coinBought);
    _transfer(msg.sender, clientWalletAddress, _coinBought);
  }
  function destroyCoin(uint _coinSold) public {
    _burn(msg.sender, _coinSold);
  }
}