Add pausability to a smart contract

circuit_breaker.sol

pragma solidity ^0.4.10;

contract Pausable {
    
bool public stopped = false;
address private owner;

modifier isAdmin() {
    if(msg.sender != owner) {
        revert();
    }
    _;
}

function Pausable(){
    owner = msg.sender;
}

function toggleContractActive() isAdmin public
{
    // You can add an additional modifier that restricts stopping a contract to be based on another action, such as a vote of users
    stopped = !stopped;
}

modifier stopInEmergency { require(!stopped); _; }
modifier onlyInEmergency { require(stopped); _; }

function deposit() stopInEmergency public
{
    // some code
}

function withdraw() onlyInEmergency public
{
    // some code
}    
    
}