how to add Select2 js to Yii 2 project ?

I am totally lost and confused on how to add JS lib (e.g. Select2) and make it work with Yii 2 Project.

I install bower and use bower to install Select2 js. A new folder "select2" was created under vendor/bower directory.

How do I include select2.js and select2.css and make sure they are loaded after jquery.js ?

See this:

See my other post for this answer.