README: mention that we need tzdata >= 2014f

zone1970.tab was added in that version. Not that it makes sense to use
outdata timezone tables, but people do strange things.

C.f. https://github.com/nodatime/nodatime/issues/319.

diff --git a/README b/README
index 9cc491e..c652319 100644 (file)
--- a/README
+++ b/README
@@ -158,6 +158,7 @@ REQUIREMENTS:
         openssl >= 1.1.0 (optional, required to support DNS-over-TLS with openssl)
         elfutils >= 158 (optional)
         polkit (optional)
+        tzdata >= 2014f (optional)
         pkg-config
         gperf
         docbook-xsl (optional, required for documentation)