[gnome-builder] Update POTFILES.in

[Piotr Drąg <piotrdrag src gnome org>]

commit e2d208a7dce9d8263ec4c2bef1b6985a52372f64
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Wed Mar 15 15:05:40 2017 +0100

    Update POTFILES.in

 po/POTFILES.in |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/po/POTFILES.in b/po/POTFILES.in
index 0c27672..87e33dd 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -163,6 +163,7 @@ plugins/gnome-code-assistance/ide-gca-preferences-addin.c
 plugins/gnome-code-assistance/ide-gca-service.c
 plugins/gnome-code-assistance/org.gnome.builder.gnome-code-assistance.gschema.xml
 plugins/html-preview/html_preview_plugin/gtk/menus.ui
+plugins/html-preview/html_preview_plugin/__init__.py
 plugins/jedi/jedi_plugin.py
 plugins/meson/meson_plugin/__init__.py
 plugins/meson-templates/meson_templates/__init__.py