Once upon a time one usually desires to add Bootstrap into one's project. Adding support for Bootstrap might seem a little hard without understanding Webpack or even despite the understanding. I started working with Vue.js (by the way, it's great!) using the official webpack template and indeed - I struggled for a few hours.
Thus, I describe foreseen steps for the weary travelers who want Bootstrap-ify their Vue.js project.
EDIT: Look down into comments for current solutions.