Add usage information to README file.

diff --git a/README b/README
index e265f93e0d3b14709e3b44264592b9bb1b0b7958..793f0b8f8cc304692d9da6515a36280efb02a61d 100644 (file)
--- a/README
+++ b/README
@@ -1,7 +1,10 @@
 skeinsum is an implementation of version 1.3 of the Skein cryptographic hash 
 function. It is licensed under version 3 of the GNU General Public License 
-or, at your option, any later version. See GPLv3.txt for details. See the 
-INSTALL file for installation information.
+or, at your option, any later version. See COPYING for details. See 
+the INSTALL file for installation information.
+
+Once the software is installed, invoke skein256sum, skein512sum, or 
+skein1024sum with the --help option to see usage information.
 
 The skeinsum home page is http://jxself.org/skein.shtml.