minor comment to clarify function behaviour in DHS

DownhillSimplexOptimizer.cpp

@@ -105,7 +105,9 @@ void DownhillSimplexOptimizer::init()
 		{
 			matrix_type simplex(m_numberOfParameters,m_numberOfParameters+1);
 			
-			//	random initialization of the simplex
+      // previously, we did a random initialization
+      // right now, we rely on our first guess and move it in one dimension by m_scales[i]
+      // as suggested in Numerical Recipes
 			for(int i = 0; i < static_cast<int>(m_numberOfParameters); i++)
 			{
 				for(int j = 0; j < static_cast<int>(m_numberOfParameters+1); j++)