Update LICENSE

LICENSE

+CC BY-NC-ND 3.0 with additional clauses	
+
 Everything including text and images in this project are protected by the copyright laws.
 You are allowed to use this material for personal use but are not allowed to use it for
 any other purpose including publishing the images, the project files or the content in the
@@ -5,7 +7,9 @@ images in any form either digital, non-digital, textual, graphical or written fo
 You are allowed to share the links to the repository or the website roadmap.sh but not
 the content for any sort of usage that involves the content of this repository taken out
 of the repository and be shared from any other medium including but not limited to blog
-posts, articles, newsletters, you must get prior consent from the understated.
+posts, articles, newsletters, you must get prior consent from the understated. These 
+conditions do not apply to the readonly GitHub forks created using the Fork button on
+GitHub with the whole purpose of contributing to the project.
 
 Copyright © 2020 Kamran Ahmed <kamranahmed.se@gmail.com>