[chronojump] Update howto_new_version.txt with info on ffmpeg mac

[Xavier de Blas <xaviblas src gnome org>]

commit c4da8d074671c5a2d361b9280201b93cc2418a96
Author: Xavier de Blas <xaviblas gmail com>
Date:   Wed Jul 1 18:52:59 2020 +0200

    Update howto_new_version.txt with info on ffmpeg mac

 howto_new_version.txt | 5 +++++
 1 file changed, 5 insertions(+)
---
diff --git a/howto_new_version.txt b/howto_new_version.txt
index c5209ce0..1d20a21b 100644
--- a/howto_new_version.txt
+++ b/howto_new_version.txt
@@ -114,6 +114,11 @@ dput chronojump-ppa build-deb/chronojump..._source.changes
 
 macosx stuff
 ------------
+
+Check if there are new static ffmpeg binaries on:
+https://ffmpeg.zeranoe.com/builds/
+download zip and put ffmpeg and ffplay on ffmpegBinariesMac dir
+
 If is for internal use, mv into: /Users/chronojump/BinarisMac/
 to be automatically available on owncloud