diff --git a/CMakeLists.txt b/CMakeLists.txt
index 07f1673..964d064 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -10,7 +10,7 @@ set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}")
 set(Boost_USE_STATIC_LIBS        ON)
 set(Boost_USE_MULTITHREADED      ON)
 set(Boost_USE_STATIC_RUNTIME    OFF)
-find_package( Boost 1.54.0 COMPONENTS program_options )
+find_package( Boost 1.49.0 COMPONENTS program_options )
 
 #set up CUDA
 find_package(CUDA)
diff --git a/main.cpp b/main.cpp
index a643b27..216d29c 100644
--- a/main.cpp
+++ b/main.cpp
@@ -33,11 +33,12 @@ int main(int argc, char* argv[])
 		("input-file,i", po::value<string>(), "Input file containing material information.")
 		("input-format,f", po::value<string>()->default_value("wavenumber,n,k"), "Format string identifying the order of material properties in the input file. Options include: microns, wavenumber, n (real RI), k (imaginary RI), A (absorbance), Xp (real Chi), Xpp (imaginary Chi).\n\nThe default [microns,n,k] will load a material file with columns representing the wavelength in microns, followed by the real and imaginary parts of the refractive index.")
 		("output-file,o", po::value<string>()->default_value("out.txt"), "Output file containing the processed material information.")
-		("output-format,t", po::value<string>()->default_value("wavenumber,n,k"), "Format string for the output file (similar to --input-format).")		
+		("output-format,t", po::value<string>()->default_value("wavenumber,n,k"), "Format string for the output file (similar to --input-format).")
 		("scaling,s", po::value<ptype>()->default_value(1.0), "Scaling value for the absorbance parameter. This value gives the thickness (in microns) of the measured material.")
 		("n0,n", po::value<ptype>()->default_value(1.48), "Average effective refractive index. This is required when computing the real refractive index from the absorption.")
 		("padding,p", po::value<int>()->default_value(2), "Padding factor used to remove edge artifacts in the Kramers-Kronig computation for computing the real RI from absorption. The default value of p=2 is sufficient in most cases.")
-		("resolution,r", po::value<int>(), "Resolution of the spectrum. The default value is based on the number of spectral samples provided in the input file.");
+		("resolution,r", po::value<int>(), "Resolution of the spectrum. The default value is based on the number of spectral samples provided in the input file.")
+		("reverse,v", "reverse the order of the output file");
 
 	po::positional_options_description pos;
 	pos.add("input-file", 1);
@@ -52,7 +53,7 @@ int main(int argc, char* argv[])
 		cout<<desc<<endl;
 		return 1;
 	}
-	
+
 	//if the input file is given, load it, otherwise exit
 	if(vm.count("input-file"))
 	{
@@ -72,12 +73,15 @@ int main(int argc, char* argv[])
 		R = vm["resolution"].as<int>();
 
 	//compute the real refractive index
-	rts::material<ptype> N = M.computeN(vm["n0"].as<ptype>(), 
+	rts::material<ptype> N = M.computeN(vm["n0"].as<ptype>(),
 										R,
 										vm["padding"].as<int>());
 
 	//output the file using the standard format
-	N.save(vm["output-file"].as<string>(), vm["output-format"].as<string>());
+	bool reverse_order = false;
+	if(vm.count("reverse"))
+        reverse_order = true;
+	N.save(vm["output-file"].as<string>(), vm["output-format"].as<string>(), reverse_order);
 
 	return 0;
 }
--
libgit2 0.21.4