add docs

diff --git a/dh_installmodules b/dh_installmodules
index 6bb2250054f81641f72a48156c41f194778f54f4..475d83886e6ade8960afdff0c2b18ffebe15d436 100755 (executable)
--- a/dh_installmodules
+++ b/dh_installmodules
@@ -30,6 +30,10 @@ run depmod and register the modules when the package is installed.
 These commands are inserted into the maintainer scripts by dh_installdeb.
 See L<dh_installdeb(1)> for an explanation of how this works.
 
+Previous versions of dh_installmodules installed files named
+etc/modprobe.d/package, code is added to the preinst and postinst to
+handle the upgrade from the old location.
+
 Previous versions of dh_installmodules also supported 
 files named debian/package.modules, which were installed into 
 etc/modutils/package in the package build directory. This was for use by