Detect auto-mode for dune-project files in emacs

This lets emacs automatically switch to dune-mode when visiting a
dune-project file.

Signed-off-by: Shon Feder <shon.feder@gmail.com>

Author: shonfeder

editor-integration/emacs/dune.el

@@ -395,7 +395,7 @@ For customization purposes, use `dune-mode-hook'."
 
 ;;;###autoload
 (add-to-list 'auto-mode-alist
-             '("\\(?:\\`\\|/\\)dune\\(?:\\.inc\\)?\\'" . dune-mode))
+             '("\\(?:\\`\\|/\\)dune\\(?:\\.inc\|-project\\)?\\'" . dune-mode))
 
 
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;