Checking in changes prior to tagging of version 0.9020.

Changelog diff is:

diff --git a/Changes b/Changes
index a5f2000..c515c0e 100644
--- a/Changes
+++ b/Changes
@@ -1,5 +1,9 @@
 Revision history for Perl extension Module::Install::CPANfile

+0.9020  Sat Mar 23 02:48:50 PDT 2013
+        - Implemeneted from_prereqs, to_string and save utility methods,
+          to allow creating a new cpanfile out of (MY)META files
+
 0.9010  Fri Feb 15 13:24:40 PST 2013
         - Fix the package name in the example