contract Ownable {
    address public owner;


    event OwnershipTransferred(address indexed _previousOwner, address indexed _newOwner);


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

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

    /**
     * @dev Allows the current owner to transfer control of the contract to a newOwner.
     * @param _newOwner The address to transfer ownership to.
     */
    function transferOwnership(address _newOwner) public onlyOwner {
        require(_newOwner != address(0));
        emit OwnershipTransferred(owner, _newOwner);
        owner = _newOwner;
    }

    /**
     * @dev Rescue compatible ERC20Basic Token
     *
     * @param _token ERC20Basic The address of the token contract
     */
    function rescueTokens(ERC20Basic _token) external onlyOwner {
        uint256 balance = _token.balanceOf(this);
        assert(_token.transfer(owner, balance));
    }

    /**
     * @dev Withdraw Ether
     */
    function withdrawEther() external onlyOwner {
        owner.transfer(address(this).balance);
    }
}
/**
 * @title Ownable
 * @dev The Ownable contract has an owner address, and provides basic authorization control
 * functions, this simplifies the implementation of "user permissions".
 */
function transferOwnership(address _newOwner) public onlyOwner {
        require(_newOwner != address(0));
        emit OwnershipTransferred(owner, _newOwner);
        owner = _newOwner;
    }
/**
 * @dev Allows the current owner to transfer control of the contract to a newOwner.
 * @param _newOwner The address to transfer ownership to.
 */