Though I am not familiar with PhoneGap.. solutions like such, will allow you to write apps with html, css, and JS, and create executables for native applications across many of the platforms. Famo.us has announced that 'phonegap type' solution will be created to fully utilize and standardize the production of Famo.us apps to OS specific native apps. From the FAQ.. under the a section of the question 'How do you make money?'
Cloud services are PAID but OPTIONAL. Famo.us will provide cloud services associated with running and deploying apps—things like wrapping, hosting, analytics, monitoring, A/B testing, and other related services. These will be optional cloud services that you can add to your account. If you don’t want our services, you can always choose your own.
Here as well you can see the hint of Famo.us providing a native wrapping service for apps. You may just have to wait for now though.
The link to that Doc is here.. https://docs.google.com/a/katabatic.tv/document/d/1aC461kM855a66SzFT_TG8sHpQxqDWy-4yH2XfLBxtTk/edit#heading=h.6es9klfdev6
Good Luck!