Simple way to have project level vim settings
I use my fork of vdebug and instead of having a ton of pathmaps this allows me to add pathmaps on a per project basis.
Just add the .project.vimrc to the root directory of your project This file will be sourced as long as you open vim from that directory or any sub directory.
There is only one setting. If you don't like the .project.vimrc name feel free to change it:
let g:projectrc_filename = 'mynewfilename'
This should work for you if not submit an issue and I'll fix it as soon as possible.