message: add missing sg headers to install
diff: @@ -188,6 +188,12 @@ ospray_install_sdk_headers(
  DESTINATION ${OSPRAY_SG_SDK_INSTALL_LOC}/common
  )
  +ospray_install_sdk_headers(
  + generator/Generator.h
  +
  + DESTINATION ${OSPRAY_SG_SDK_INSTALL_LOC}/generator
  +)
  +
  ospray_install_sdk_headers(
  geometry/Cylinders.h
  geometry/Geometry.h
  