fix(SDK): prevent SteamVR SDK reporting a button two press
fix(SDK): prevent SteamVR SDK reporting a button two press

Previously, the SteamVR SDK would report the Application Menu button
press as being ButtonOne and ButtonTwo. This is sematically incorrect
as the Vive controller does not have a button two and therefore
requesting if button two has been pressed should always return false.

Fulby/VRTK,red-horizon/VRTK,gpvigano/SteamVR_Unity_Toolkit,virror/VRTK,Innoactive/IA-unity-VR-toolkit-VRTK,mattboy64/SteamVR_Unity_Toolkit,TMaloteaux/SteamVR_Unity_Toolkit,gpvigano/VRTK,gomez-addams/SteamVR_Unity_Toolkit,thestonefox/VRTK,thestonefox/SteamVR_Unity_Toolkit,adamjweaver/VRTK