[libchamplain] Update Clutter version in README

[Jiří Techet <jiritechet src gnome org>]

commit 61f2e26977e4076d193958b6a3c5ccd80f3d1ee0
Author: Jiří Techet <techet gmail com>
Date:   Thu May 2 22:27:24 2013 +0200

    Update Clutter version in README

 README |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/README b/README
index 58ece16..103625d 100644
--- a/README
+++ b/README
@@ -9,7 +9,7 @@ libchamplain requires:
   * glib >= 2.10
   * gio >= 2.16
   * gdk >= 3.0
-  * clutter >= 1.2
+  * clutter >= 1.12
   * cairo >= 1.4
   * sqlite >= 3.0
   * libsoup >= 2.33.5