README: Update.

Reported at <https://savannah.gnu.org/bugs/?60837>.

* README: Overhaul the paragraph that mentions iconv.m4.
diff --git a/ChangeLog b/ChangeLog
index 2d57a6e..d6b8130 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2021-06-27  Bruno Haible  <bruno@clisp.org>
+
+	README: Update.
+	Reported at <https://savannah.gnu.org/bugs/?60837>.
+	* README: Overhaul the paragraph that mentions iconv.m4.
+
 2021-06-06  Bruno Haible  <bruno@clisp.org>
 
 	gnulib-local: Put real license notice into the source files.
diff --git a/README b/README
index 6d4b2f9..0d93f94 100644
--- a/README
+++ b/README
@@ -115,16 +115,13 @@
 
 To use it, simply #include <iconv.h> and use the functions.
 
-To use it in an autoconfiguring package:
-  - If you don't use automake, append m4/iconv.m4 to your aclocal.m4
-    file.
-  - If you do use automake, add m4/iconv.m4 to your m4 macro repository.
+To use it in a package that uses GNU autoconf and GNU automake:
+  - Use gnulib-tool to import the Gnulib module 'iconv'. It consists
+    of a couple of *.m4 files (iconv.m4 and its dependencies).
   - Add to the link command line of libraries and executables that use
     the functions the placeholder @LIBICONV@ (or, if using libtool for
-    the link, @LTLIBICONV@). If you use automake, the right place for
+    the link, @LTLIBICONV@). In Makefile.am files, the right place for
     these additions are the *_LDADD variables.
-Note that 'iconv.m4' is also part of GNU gnulib, available through
-the gnulib module 'iconv'.
 
 
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