Update README.md

Author: dagoatzmcclusky

README.md

@@ -1,2 +1,5 @@
 # Linux-introduction-tutorial
 This is the introduction of the Linux operating System, written in HTML. Its source code is fully licensed under GPL v3.0.
+If anyone has any interest in contributing towards the growth of this file, please don't hesitate to commit to the main branch. You can also add additional CSS or Javascript files to the main branch, if you wish.
+Final notes:
+To fully edit this file, a fully-integrated IDE is highly required to edit this main file, such as VSCode, Pycharm, ....