updated customization documentation

Author: superchromix

docs/customization.rst

@@ -97,7 +97,7 @@ Compare model_id with the defined model of the new model and call the calculate
             break;
     }
 
-6.  If using CMAKE to configure the build properties, the new .cuh file name must be added to the list of CUDA headers 
+6.	If using CMAKE to configure the build properties, the new .cuh file name must be added to the list of CUDA headers 
 in the CMakeLists.txt file is located in the Gpufit\Gpufit subdirectory.  Specifically, the following section must be
 modified to include the new filename.
 
@@ -310,6 +310,26 @@ For the calculation of the Hessian.
         .
         .
 		
+5.	If using CMAKE to configure the build properties, the new .cuh file name must be added to the list of CUDA headers 
+in the CMakeLists.txt file is located in the Gpufit\Gpufit subdirectory.  Specifically, the following section must be
+modified to include the new filename.
+
+.. code-block:: cpp
+
+	set( GpuCudaHeaders
+		linear_1d.cuh
+		gauss_1d.cuh
+		gauss_2d.cuh
+		gauss_2d_rotated.cuh
+		gauss_2d_elliptic.cuh
+		cauchy_2d_elliptic.cuh
+		lse.cuh
+		mle.cuh
+		cuda_gaussjordan.cuh
+		cuda_kernels.cuh
+		gpu_data.cuh
+	)
+		
 Future releases
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