Update README

README.md

@@ -1,6 +1,8 @@
 OpenVR SDK
 ---
 
+**Forked from commit `4c85abcb7f7f1f02adaf3812018c99fc593bc341` @ openvr**
+
 OpenVR is an API and runtime that allows access to VR hardware from multiple 
 vendors without requiring that applications have specific knowledge of the 
 hardware they are targeting. This repository is an SDK that contains the API 

headers/openvr_capi.h

@@ -2202,6 +2202,11 @@ typedef struct VRControllerAxis_t
 	float y;
 } VRControllerAxis_t;
 
+#if defined(__linux__) || defined(__APPLE__)
+// This structure was originally defined mis-packed on Linux, preserved for
+// compatibility.
+#pragma pack( push, 4 )
+#endif
 typedef struct VRControllerState_t
 {
 	uint32_t unPacketNum;
@@ -2209,6 +2214,9 @@ typedef struct VRControllerState_t
 	uint64_t ulButtonTouched;
 	struct VRControllerAxis_t rAxis[5]; //struct vr::VRControllerAxis_t[5]
 } VRControllerState_t;
+#if defined(__linux__) || defined(__APPLE__)
+#pragma pack( pop )
+#endif
 
 typedef struct CameraVideoStreamFrameHeader_t
 {