constructor(
    ERC20Basic _token,
    address _beneficiary

  )
    public
  {
    require(block.timestamp < releaseTime1);
    require(block.timestamp < releaseTime2);
    require(block.timestamp < releaseTime3);
    require(block.timestamp < releaseTime4);
    
    require(_beneficiary != address(0));
    require(_token != address(0));

    token = _token;
    beneficiary = _beneficiary;


  }