Append to babel languages in org

While here add idris-mode to the languages list.

emacs.org

@@ -641,19 +641,20 @@ Org-mode keybindings and settings, pretty sparse really.
       '(org-hide-emphasis-markers t)
       '(org-confirm-babel-evaluate nil)
       )
-     (org-babel-do-load-languages
-      'org-babel-load-languages
-      '(
-        (emacs-lisp . t)
-        (sh . t)
-        (haskell . t)
-        (latex . t)
-        (ditaa . t)
-        (perl . t)
-        (python . t)
-        (C . t)
-        )
-      )
+     (org-babel-do-load-languages 'org-babel-load-languages
+                                  (append org-babel-load-languages
+                                          '(
+                                            (C . t)
+                                            (ditaa . t)
+                                            (emacs-lisp . t)
+                                            (haskell . t)
+                                            (idris . t)
+                                            (latex . t)
+                                            (perl . t)
+                                            (python . t)
+                                            (ruby  . t)
+                                            (sh . t)
+                                            )))
      (add-hook 'after-init-hook (lambda () (org-reload)))
      )
    )