[gimp] build: make the flatpak remote-add call clearer.

[Jehan Pagès <jehanp src gnome org>]

commit 9391a0ae6b7c434bf44985e5ae136d0ff9852e0a
Author: Jehan <jehan girinstud io>
Date:   Thu Jun 1 01:00:11 2017 +0200

    build: make the flatpak remote-add call clearer.

 build/flatpak/flatpak-howto.txt |   11 ++++++++---
 1 files changed, 8 insertions(+), 3 deletions(-)
---
diff --git a/build/flatpak/flatpak-howto.txt b/build/flatpak/flatpak-howto.txt
index 3d3d572..551e193 100644
--- a/build/flatpak/flatpak-howto.txt
+++ b/build/flatpak/flatpak-howto.txt
@@ -90,10 +90,15 @@ Or simply update them:
 
   The same repository will contain all the builds.
 
-* Test it with:
+* Test it locally with:
 
-> flatpak --user remote-add --no-gpg-verify gimp-repo gimp-repo
-> flatpak --user install gimp-repo org.gimp.GIMP
+> flatpak --user remote-add --no-gpg-verify gimp /path/to/repo
+
+Or remotely:
+
+> flatpak --user remote-add --no-gpg-verify gimp http://example.com/repo
+
+> flatpak --user install gimp org.gimp.GIMP
> flatpak run org.gimp.GIMP
 
   Also an entry "(Dev) GNU Image Manipulation Software" should now be