Cannot use GVRCardboardView and GVRVideoView in same application

[bubbakanoosh47]

When switching to the new Cocoa Pod 1.10.0 from 1.0.1 and using the pod "GVRSDK" or "GVRSDK/GVRView", I was unable to use a GVRCardboardView. However, if I switched the pod to "GVRSDK/SDK" as shown in the TreasureHunt example then I was no longer able to use the GVRVideoView widget.

I would like to use both views in my application as the GVRVideoView is much easier to work with but can resort to using purely the GVRCardboardView if that is the direction this SDK is going in.

Currently I am using a Bridging Header to create a Swift 3.0 application with this SDK in Xcode 8.

[sanjayc77]

Duplicate of #163

This will be fixed in next revision.