gnucash-htdocs master: Add flathub badge

[Frank H.Ellenberger]

Updated	 via  https://github.com/Gnucash/gnucash-htdocs/commit/77ca619e (commit)
	from  https://github.com/Gnucash/gnucash-htdocs/commit/d6373555 (commit)



commit 77ca619e02d693c115f3a2d46d1bdfa32065eb74
Author: Frank H. Ellenberger <frank.h.ellenberger at gmail.com>
Date:   Tue Sep 10 07:49:30 2019 +0200

    Add flathub badge



Summary of changes:
 download.phtml | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)