add comments

cmake/scrConfig.cmake.in

@@ -11,8 +11,13 @@ find_dependency(rankstr REQUIRED)
 find_dependency(spath REQUIRED)
 find_dependency(MPI REQUIRED)
 
-# so find_dependencies can find cmake module files (like FindDTCMP.cmake)
+# The packages below do not have cmake package config files.
+# Instead, we provide cmake find module files, like FindDTCMP.cmake.
+# This way users who build with cmake don't have to write their own.
+# The line below registers the current working directory with cmake
+# so that it can find the Find*.cmake module files.
 list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}")
+
 find_dependency(DTCMP REQUIRED)
 find_dependency(LWGRP REQUIRED)