VR Expansion Plugin

Pushed a new commit to the plugin repository

Plugin



Added VRGameViewportClient class  
 class is intended to provide support for Local Mixed play between a mouse and keyboard player  
and a VR player. It is not needed outside of that use.    

There is a new wiki page under Misc Classes that covers its use  
[https://bitbucket.org//vrexpansionplugin/wiki/Misc%20Classes](https://bitbucket.org//vrexpansionplugin/wiki/Misc%20Classes)

Added functionality for the ParentRelAttachVRComponent, it can now be attached to the bottom of the capsule at the foot location
instead of at the HMD location. Only happens when bUseFeetLocation is checked. Thanks to SpaceHarry for the initial pull
request, I had plans to do  but kept forgetting about it.  

Template



Added VRGameViewportClient class blueprint override to template and assigned it as the default GameViewportClient class.
 is to show how to change the input parameters for it.