Improvements to ConnectButton

New Features

• Added the ability to specify a callback as a param when creating a Bitski ConnectButton
• Added a remove() method to the ConnectButton to easily remove it from the DOM

const bitski  = new Bitski('CLIENT ID', 'REDIRECT URL');
const container = document.querySelector('#sign-in');
const button = bitski.getConnectButton(container, undefined, undefined, (error, user) => {
  // signed in!
  button.remove();
  // update state in app.
});