[libgdata] demos: Fix usage documentation in youtube-cli

[Philip Withnall <pwithnall src gnome org>]

commit 69d181787f4ed92690130d50858dc856c462585a
Author: Philip Withnall <philip tecnocode co uk>
Date:   Sun May 3 23:51:59 2015 +0100

    demos: Fix usage documentation in youtube-cli
    
    It was outdated.

 demos/youtube/youtube-cli.c |   10 +++++++++-
 1 files changed, 9 insertions(+), 1 deletions(-)
---
diff --git a/demos/youtube/youtube-cli.c b/demos/youtube/youtube-cli.c
index 7f3186f..37ff4af 100644
--- a/demos/youtube/youtube-cli.c
+++ b/demos/youtube/youtube-cli.c
@@ -29,7 +29,15 @@
 static int
 print_usage (char *argv[])
 {
-       g_printerr ("%s: Usage — %s search <term>\n", argv[0], argv[0]);
+       g_printerr ("%s: Usage — %s <subcommand>\n"
+                   "Subcommands:\n"
+                   "   search <query string>\n"
+                   "   info <video ID>\n"
+                   "   standard-feed <feed name>\n"
+                   "   categories\n"
+                   "   related <video ID>\n"
+                   "   upload <filename> <title> [description]\n",
+                   argv[0], argv[0]);
        return -1;
 }