doc: reference COPYING from README

* README: Reference COPYING as per the GNU coding standards,
and soon to be enforced with a syntax-check from gnulib.

diff --git a/README b/README
index 363155a371aa1b9f33167bd054e5f35a7087792c..ef850436b418dc1b997b9e608461072eb9c46dd0 100644 (file)
--- a/README
+++ b/README
@@ -127,6 +127,7 @@ https://www.gnu.org/prep/standards/
 For any copyright year range specified as YYYY-ZZZZ in this package
 note that the range specifies every single year in that closed interval.
 
+Please see the file COPYING for copying conditions.
 
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