Emphasize on the license terms

README.md

@@ -7,7 +7,7 @@ The original guide may be found at http://www.tldp.org/LDP/lkmpg/
 
 ## License
 
-The work is released under the Open Software License (OSL) 3.0.
-Use of this work is governed by a copyleft license that can be found in the LICENSE file.
+The Linux Kernel Module Programming Guide is a free book; you may reproduce and/or modify it under the terms of the Open Software License.
+Use of this work is governed by a copyleft license that can be found in the `LICENSE` file.
 
 The complementary sample code is licensed under GNU GPL version 2, as same as Linux kernel.