updated documentation to be more clear about needing to run tests in Unity 2018.4.1f1
updated documentation to be more clear about needing to run tests in Unity 2018.4.1f1

killerantz/HoloToolkit-Unity,killerantz/HoloToolkit-Unity,DDReaper/MixedRealityToolkit-Unity,killerantz/HoloToolkit-Unity,killerantz/HoloToolkit-Unity