I just published a pretty rudimentary PhoneGap plugin for the Aviary SDK. You can find it on GitHub as the AviaryGap project.
It assumes you have at least some understanding of how to install a PhoneGap plugin. If not, there are plenty of articles online that discuss this.
It also assumes you have installed the Aviary SDK into your XCode project. There are instructions for that in Aviary’s documentation.
This release is pretty rough and does not include a sample XCode project. Contribution is welcomed.