Add copyright notices, tiny bit more documentation.

COPYING

@@ -0,0 +1,17 @@
+
+Copyright (c) 2013 Simon Howard
+
+Permission to use, copy, modify, and/or distribute this software
+for any purpose with or without fee is hereby granted, provided
+that the above copyright notice and this permission notice appear
+in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
+WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
+AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR
+CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
+NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+

README

@@ -1,2 +1,14 @@
 Yoctolisp is a Lisp interpreter written in a weekend.
 
+Features:
+ * Read-eval-print loop.
+ * Lexical closures.
+ * Proper garbage collection.
+ * Tail call optimization.
+ * Variadic function syntax.
+
+What I didn't have time for:
+ * Continuations.
+ * Decent error handling
+ * Everything else.
+

stdlib.l

@@ -1,4 +1,20 @@
 
+; Copyright (c) 2013 Simon Howard
+;
+; Permission to use, copy, modify, and/or distribute this software
+; for any purpose with or without fee is hereby granted, provided
+; that the above copyright notice and this permission notice appear
+; in all copies.
+;
+; THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
+; WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
+; WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
+; AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR
+; CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+; LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
+; NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+; CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
 ; Yoctolisp standard library functions.
 ; This file is loaded on startup.
 

yoctolisp.c

@@ -1,3 +1,24 @@
+/*
+
+Copyright (c) 2013 Simon Howard
+
+Permission to use, copy, modify, and/or distribute this software
+for any purpose with or without fee is hereby granted, provided
+that the above copyright notice and this permission notice appear
+in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
+WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
+AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR
+CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
+NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+ */
+
+// Yoctolisp: a miniature lisp interpreter written in a weekend.
 
 #include <stdio.h>
 #include <stdlib.h>