Well, that demo is supposed to be basic
Anyway, here is the minimum work flow:
* convert Ogre file to Bones' native format either with provided script files or via BonesIO class
* load converted file in your application via BonesIO class
* set textures. add model to jPCT world. place camera (these are jPCT related stuff)
* every frame calculate an animation index and call AnimatedGroup.animateXX methods to animate your model