[gnome-music] README: instruct newcomers to use jhbuild

[Felipe Borges <felipeborges src gnome org>]

commit 087276aebed19e9e978245188e0e645d50250c9b
Author: FatMinMin <chiehmin18 gmail com>
Date:   Mon Apr 4 10:53:42 2016 +0800

    README: instruct newcomers to use jhbuild
    
    https://bugzilla.gnome.org/show_bug.cgi?id=763618

 README |   12 +++++++-----
 1 files changed, 7 insertions(+), 5 deletions(-)
---
diff --git a/README b/README
index 7491849..9826374 100644
--- a/README
+++ b/README
@@ -13,13 +13,15 @@ You can join us on the IRC:
 #gnome-music on GIMPNet
 
 
-=== Building from git ===
+=== Building from jhbuild ===
 
-$ git clone git://git.gnome.org/gnome-music
-$ cd gnome-music
-$ ./autogen.sh
-$ make
+Follow the BuildGnome tutorial for newcomers at https://wiki.gnome.org/Newcomers/BuildGnome
 
+After installing jhbuild, you have to build gnome-music and all its dependencies. The task can be done by 
simply running:
+$ jhbuild build gnome-music
+
+Finally, start gnome music with:
+$ jhbuild run gnome-music"
 
 === Troubleshooting ===