[pitivi] flatpak: Allow user to set where to find pitivi source

[Thibault Saunier <tsaunier src gnome org>]

commit 6a04701d45fb50dc5fef1a9fd3f2f2283bb98f29
Author: Thibault Saunier <tsaunier gnome org>
Date:   Wed Jun 1 12:17:32 2016 -0400

    flatpak: Allow user to set where to find pitivi source

 build/flatpak/pitivi-flatpak |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/build/flatpak/pitivi-flatpak b/build/flatpak/pitivi-flatpak
index c81a3c1..4c3b222 100755
--- a/build/flatpak/pitivi-flatpak
+++ b/build/flatpak/pitivi-flatpak
@@ -14,7 +14,7 @@ FLATPAK_ENVPATH=${FLATPAK_ENVPATH:-$HOME/$APPLICATION_NAME-flatpak}
 APPLICATION_REF_NAME=org.pitivi.Pitivi
 
 # Local path to the application repository
-APPLICATION_REPOSITORY=$FLATPAK_ENVPATH/$APPLICATION_NAME
+APPLICATION_REPOSITORY=${APPLICATION_REPOSITORY:-$FLATPAK_ENVPATH/$APPLICATION_NAME}
 
 # The name given to the application in the .desktop file
 APPLICATION_DESKTOP_NAME="(Daily) Pitivi"