[gnome-builder] README: update jhbuild line to use gnome-world moduleset

[Christian Hergert <chergert src gnome org>]

commit 5a7bda02cf5247a86fdfb2b6dd2231fc3355b5ab
Author: Christian Hergert <christian hergert me>
Date:   Fri Jan 2 14:38:00 2015 -0800

    README: update jhbuild line to use gnome-world moduleset

 README |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/README b/README
index 2fec6fc..fcdebc3 100644
--- a/README
+++ b/README
@@ -34,7 +34,7 @@ get started is to use the development tool jhbuild to install from source.
   ./autogen.sh
   make
   make install
-  jhbuild build gnome-builder
+  jhbuild build -m gnome-world gnome-builder
   jhbuild run gnome-builder
 
 We hope to have VM images that can be used for testing in the near future.