[simple-scan] Update POTFILES.in and POTFILES.skip

[Piotr Drąg <piotrdrag src gnome org>]

commit 6e0eef4b92d22f281a8f4ca31396dd490d3f90fb
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Mon May 29 18:22:34 2017 +0200

    Update POTFILES.in and POTFILES.skip

 po/POTFILES.in   |    1 +
 po/POTFILES.skip |    1 +
 2 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/po/POTFILES.in b/po/POTFILES.in
index 347b5bc..7956857 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -6,6 +6,7 @@ data/simple-scan.desktop.in
 src/app-window.ui
 src/app-window.vala
 src/authorize-dialog.ui
+src/book.vala
 src/page.vala
 src/preferences-dialog.ui
 src/preferences-dialog.vala
diff --git a/po/POTFILES.skip b/po/POTFILES.skip
index da99f97..ab5237f 100644
--- a/po/POTFILES.skip
+++ b/po/POTFILES.skip
@@ -1,6 +1,7 @@
 # List of source files that should *not* be translated.
 # Please keep this file sorted alphabetically.
 src/app-window.c
+src/book.c
 src/page.c
 src/preferences-dialog.c
 src/scanner.c