Mention inf-clojure in the commentary

Author: Bozhidar Batsov

clojure-mode.el

@@ -29,6 +29,9 @@
 ;;   ;; require or autoload smartparens
 ;;   (add-hook 'clojure-mode-hook 'smartparens-strict-mode)
 
+;; See inf-clojure (http://github.com/clojure-emacs/inf-clojure) for
+;; basic interaction with Clojure subprocesses.
+
 ;; See CIDER (http://github.com/clojure-emacs/cider) for
 ;; better interaction with subprocesses via nREPL.