bbatsov/projectile — pull request #257 by marcinant (2014-01-30 21:55:30+00:00)
Title: Add option to override project dir

I'm not sure if this is the best option.
Maybe it could be better to add 'projectile-project-root-dir' as optional argument to 'projectile-project-root' function but with global variable it's easier to override dir without any other modifications in code.