I was searching for some examples of rx usage and came cross this blog post http://francismurillo.github.io/2017-02-15-Project-Script-Loader.
It mentions these functions -
`projectile-project-p`, `projectile-project-root`, `project-project-name` and `locate-dominating-file`.
I've been needing these functions and even forgotten how much I need them.
On the site there is also this - http://francismurillo.github.io/2016-08-02-An-Unique-Projectile-Completion/, which has an implementation of something I've always wanted in `find-file`, displaying the file name before the path.