Skeleton poser only works with throwable script.

[Giantbean]

According to the documentation (https://valvesoftware.github.io/steamvr_unity_plugin/articles/Skeleton-Poser.html) the poser should work on any object containing the Intractable script however this is not working. When using the Steam VR_Skeleton_Poser script with Intractable nothing happens. You can add linear driver or circular driver with no effect. Only the Throwable script activates the protected virtual void OnAttachedToHand(Hand hand) function of the intractable or what ever part of the script that makes the pose show.

Please advise.

Correction: The skeleton poser does work on the Linear driver but not on the Circular driver or objects with intractable script and poser script alone which you may want to have poses for grabbing onto even if the object is not movable such as a railing or ladder rung.

[Giantbean]

This pull request fixes the issue and should be implemented into the master
#304