function registerComponentCallback(callbackName, fn) {
          componentsCallbacks[callbackName] = componentsCallbacks[callbackName] || [];
          componentsCallbacks[callbackName].push(fn);
        }
Same as components.before, but executed after the method invocation.

@method components.after
@param  {[type]}   methodName eg. 'initialize', 'remove'
@param  {Function} fn         actual function to run