title: How to install vue.js inside a repository?
body: <p>I have a project with a backend and frontend repository.
  The frontend utilizes vue.js. </p>
  
  <p>Now, I can easily clone the git repository onto my local machine. There I need to run it. 
  To do this, I first need to set up vue.js inside the repository...somehow, I guess.
  The repository doesnt have any node or npm or whatever stuff in it. I need to install this myself, locally (I guess this was done to protect the repository from growing too big). </p>
  
  <p>I learnt on the vue.js official sites how to create a new project, but in this case, I'm working in an existing project, right? So how do I get vue.js into an existing project. 
  Its vue-cli based btw., so I need to install vue-cli as well (or rather use the vue-cli version of vue.js)</p>