[aravis] introspection: tell how to launch the gjs script.

[Emmanuel Pacaud <emmanuel src gnome org>]

commit 595c1da741fdd3ddd2076df6ccdbfe8e08c4e219
Author: Emmanuel Pacaud <emmanuel gnome org>
Date:   Thu May 20 11:25:44 2010 +0200

    introspection: tell how to launch the gjs script.

 test/arv-camera-test.js |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)
---
diff --git a/test/arv-camera-test.js b/test/arv-camera-test.js
index eb7faf1..6079543 100755
--- a/test/arv-camera-test.js
+++ b/test/arv-camera-test.js
@@ -22,6 +22,15 @@
  * Author: Emmanuel Pacaud <emmanuel gnome org>
  */
 
+/*
+   If you have installed aravis in a non standard location, you may need
+   to make GI_TYPELIB_PATH point to the correct location. For example:
+
+   export GI_TYPELIB_PATH=$GI_TYPELIB_PATH:/opt/bin/lib/girepositry-1.0/
+
+   You may also have to give the path to libaravis.so, using LD_PRELOAD.
+ */
+
 const GLib = imports.gi.GLib;
 const Aravis = imports.gi.Aravis;