Set version to 0.4.0

Author: susam

.emacs

@@ -1,4 +1,4 @@
-;;; Emacs4CL 0.4.0-dev <https://github.com/susam/emacs4cl>
+;;; Emacs4CL 0.4.0 <https://github.com/susam/emacs4cl>
 
 ;; Customize user interface.
 (menu-bar-mode 0)

README.md

@@ -25,7 +25,7 @@ like:
 
 [![Screenshot of Emacs][screenshot]][screenshot]
 
-[screenshot]: https://i.imgur.com/3BttNWM.png
+[screenshot]: https://i.imgur.com/9LoZzHz.png
 
 If you are already comfortable with Emacs and only want to understand
 the content of the [`.emacs`] file, you can skip ahead directly to the

meta/example.lisp

@@ -0,0 +1,17 @@
+;;;; Common Lisp Examples.
+
+(defun hello-world ()
+  "Print 'hello, world' message."
+  (format t "hello, world~%"))
+
+(defun factorial (n)
+  "Compute factorial of n."
+  (if (zerop n)
+      1
+      (* n (factorial (- n 1)))))
+
+(defun fibonacci (n)
+  "Compute nth Fibonacci number."
+  (if (< n 2)
+      n
+      (+ (fibonacci (- n 1)) (fibonacci (- n 2)))))