More notes on README

Author: youchenlee

README.md

@@ -1,7 +1,11 @@
 CKEditor Package
 =====================
 
-p.s. CKEDITOR has its official composer package [since 2014](https://ckeditor.com/blog/CKEditor-Supports-Bower-and-Composer/). Instead of using this package, I recommend just follow [the official CKEditor installation instructions with package managers](https://docs.ckeditor.com/ckeditor4/latest/guide/dev_package_managers.html#composer)
+## Note
+
+**This is NOT the official CKEDITOR package.**
+
+[CKEDITOR officially has its own composer package since 2014](https://ckeditor.com/blog/CKEditor-Supports-Bower-and-Composer/). Instead of using this package, we recommend you follow [the official CKEditor installation instructions with package managers](https://docs.ckeditor.com/ckeditor4/latest/guide/dev_package_managers.html#composer)
 
 ## Installation
 ### Set up package