gitter.js

// current
((window.gitter = {}).chat = {}).options = {
  room: 'getgrav/grav'
};
document.addEventListener('gitter-sidecar-instance-started', function(e) {
  $('.gitter-open-chat-button').html('<i class="fa fa-comments-o fa-fw"></i> Open Chat');
});
});

// ideal
((window.gitter = {}).chat = {}).options = {
  room: 'getgrav/grav',
  button: '<i class="fa fa-comments-o fa-fw"></i> Open Chat'
};
});