[gnome-screenshot] Add translator comments to the .desktop file

[Piotr Drąg <piotrdrag src gnome org>]

commit 2b32a5996fb0351df4a9c1c38959cc88ff031391
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Mon May 29 18:30:50 2017 +0200

    Add translator comments to the .desktop file
    
    Hopefully, we’ll get fewer broken translations.

 src/org.gnome.Screenshot.desktop.in |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/src/org.gnome.Screenshot.desktop.in b/src/org.gnome.Screenshot.desktop.in
index 434b658..73b4d02 100644
--- a/src/org.gnome.Screenshot.desktop.in
+++ b/src/org.gnome.Screenshot.desktop.in
@@ -1,10 +1,12 @@
 [Desktop Entry]
 Name=Screenshot
 Comment=Save images of your screen or individual windows
+# Translators: Search terms to find this application. Do NOT translate or localize the semicolons! The list 
MUST also end with a semicolon!
 Keywords=snapshot;capture;print;screenshot;
 Exec=gnome-screenshot --interactive
 Terminal=false
 Type=Application
+# Translators: Do NOT translate or transliterate this text (this is an icon file name)!
 Icon=applets-screenshooter
 StartupNotify=true
 Categories=GTK;GNOME;Utility;X-GNOME-Utilities;