This is a Yii2 integration of CodeMirror - a JavaScript component that provides a code editor in the browser. When a mode is available for the language you are coding in, it will color your code, and optionally help with indentation.
http://codemirror.net/doc/manual.html
https://github.com/codemirror/CodeMirror
composer.phar require --prefer-dist zyx/yii2-codemirror "*"
TBD
TBD