you could use Miklkshape and the ogre plugin , also blender may work but i didnt research about a ogre plugin, after that you must use the tools in the bones api to converted to .bones.
I didnt found my self a good workflow for creating animation and converting to bones, i think i have more control over keyframe animations so its the one i use
![Tongue :P](https://www.jpct.net/forum2/Smileys/default/tongue.gif)
, not that fancy, not that bad