[vino] Add a translation comment for tube mode

[David King <davidk src gnome org>]

commit 248d819dc1806f3f844d480c52c0cc05b1ea8e19
Author: David King <amigadave amigadave com>
Date:   Mon Sep 24 07:12:14 2012 +0100

    Add a translation comment for tube mode
    
    Fixes bug 684656.

 server/vino-main.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/server/vino-main.c b/server/vino-main.c
index 4d62455..a11e7e0 100644
--- a/server/vino-main.c
+++ b/server/vino-main.c
@@ -295,6 +295,9 @@ main (int argc, char **argv)
 #ifdef VINO_HAVE_TELEPATHY_GLIB
       { "tube", 't',
         0, G_OPTION_ARG_NONE, &tube,
+        /* Tube mode uses Telepathy's Tubes to share a user's desktop directly
+         * with another IM contact. http://telepathy.freedesktop.org/wiki/Tubes
+         */
         N_("Start in tube mode, for the âShare my Desktopâ feature"),
         NULL },
 #endif