README.rd in rdtool-0.6.31 vs README.rd in rdtool-0.6.32

@@ -42,11 +42,11 @@
 ((<"issues at gihtub"|URL:https://github.com/uwabami/rdtool/issues>)),
 or E-mail me ((<URL:mailto:[e-mail]>)).
 
 == License
 
-You can use/re-distribute/change RDtool under Ruby's License or GPL, see
-LICNESE.txt and COPYING.txt.  This distribution of RDtool include files
+You can use/re-distribute/change RDtool under Ruby's License or GPL-2+, 
+see LICNESE.txt and COPYING.txt.  This distribution of RDtool include files
 that are copyrighted by somebody else, and these files can be
 re-distributed under those own license.  These files include the
 condition of those licenses in themselves.
 
 The license information for every files is as follows.