Fixed typo in CUDA related part in the CMake file

Author: Patrick Stotko

CMakeLists.txt

@@ -354,7 +354,7 @@ IF(ENABLE_CUDA)
     ENDIF()
 
     SET(OLD_CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
-    IF(CUDA_VERION VERSION_LESS 7.0)
+    IF(CUDA_VERSION VERSION_LESS 7.0)
       STRING(REGEX REPLACE "-std=c\\+\\+.." "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
     ENDIF()
     CUDA_COMPILE(CUDA_OBJECTS