add cmake support for V100 GPUs/cuda9/compute_70

CMakeLists.txt

@@ -82,6 +82,9 @@ if (CUDA_FOUND)
         if (NOT (${CUDA_VERSION} LESS 8.0)) 
 		list(APPEND CUDA_NVCC_FLAGS "-gencode=arch=compute_60,code=[sm_60,sm_61]")
 	endif()
+        if (NOT (${CUDA_VERSION} LESS 9.0)) 
+		list(APPEND CUDA_NVCC_FLAGS "-gencode=arch=compute_70,code=sm_70")
+	endif()
         add_definitions(-DWITH_CUDA)
         set (BIOEM_CUDA_STATUS "Found")
 endif()