contract Ownable {
    address public Master;


    /**
     * @dev The Ownable constructor sets the original `owner` of the contract to the sender
     * account.
     */
    function Ownable() public {
        Master = msg.sender;
    }


    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyMaster() {
        require(msg.sender == Master);
        _;
    }


    /**
     * @dev Allows the current owner to transfer control of the contract to a newMaster.
     * @param newMaster The address to transfer ownership to.
     */
    function transferOwnership(address newMaster) public onlyMaster {
        if (newMaster != address(0)) {
            Master = newMaster;
        }
    }

}
/**
 * @title Ownable
 * @dev The Ownable contract has an owner address, and provides basic authorization control
 * functions, this simplifies the implementation of "user permissions".
 */
function Ownable() public {
    Master = msg.sender;
}

/**
 * @dev The Ownable constructor sets the original `owner` of the contract to the sender
 * account.
 */