changed license notices to BSD in all files
diff --git a/examples/explore_ast.py b/examples/explore_ast.py
index f845c0f..83f096b 100644
--- a/examples/explore_ast.py
+++ b/examples/explore_ast.py
@@ -9,8 +9,8 @@
 # information from the AST.

 # It helps to have the _c_ast.yaml file in front of you.

 #

-# Copyright (C) 2008-2010, Eli Bendersky

-# License: LGPL

+# Copyright (C) 2008-2011, Eli Bendersky

+# License: BSD

 #-----------------------------------------------------------------

 import sys