Merge branch 'JI-5152-ckeditor5'

Author: Languafe

README.md

@@ -7,4 +7,16 @@ A general library that is supposed to be used in most PHP implementations of H5P
 
 All code is licensed under MIT License
 
-Open Sans font is licensed under Apache license, Version 2.0
+Open Sans font is licensed under Apache license, Version 2.0
+
+## Compiling scss to css
+
+You first need to install ruby and compass:
+- `sudo apt update`
+- `sudo apt install ruby-full`
+- `sudo apt install build-essential`
+- `sudo gem install compass`
+
+Then cd to `h5p-editor-php-library/styles` and compile the scss files:
+- `compass watch` to continuely compile changes
+- or `compass clean && compass compile` to delete the css files and compile new ones