message: add aliases for skeleton sensors
diff: {
  "plugins": [
  "com_osvr_example_Skeleton"
  - ]
  + ],
  + "aliases": {
  + "/me/hands/left": "/com_osvr_example_Skeleton/Skeleton/skeleton/0",
  + "/me/hands/right": "/com_osvr_example_Skeleton/Skeleton/skeleton/1"
  + }
  }
  