Why are so many js libraries talking about command line installation : I have apparently missed a shift in javascript culture ... now I see js libraries (such as [modernizr][1]) that talk about installing them via command lines via *npm*. This is of course very different from the simple notion of `<script src ='...'></script>`

My question is *not* 'what is npm', but what is going on in the culture of js development ... the paradigm shift, itself ... 

> command line? what are you talking about!? ... it javascript!


  [1]: https://modernizr.com/docs/#prefixed