The Rally Ruby SDK by Rally interacts with the API, however Rally Software does not maintain the GitHub kit. References include gem installation, API usage, and user authentication. For support, visit http://stackoverflow.com/questions/ask?tags=rally
Samsung and the Tizen Association recently made the Tizen Software Development Kit for Wearables available from the Tizen developer web site. The SDK supports any wearable running Samsung's Tizen operating system, but that's an extremely limited number of devices at the moment, with just the Samsung Gear 2 and Gear 2 Neo smartwatches filling the space.