use projectile when available

Author: andrewpeck

hog.el

@@ -59,7 +59,8 @@ Can be set in dir-locals to be changed on a per-project basis.")
 
 (defun hog--project-root ()
   "Get the root of the current version controlled project."
-  (expand-file-name (or (vc-root-dir)
+  (expand-file-name (or (and (fboundp 'projectile-project-root) (projectile-project-root))
+                        (vc-root-dir)
                         (locate-dominating-file default-directory ".git"))))
 
 (defun hog--get-projects ()