add a readme, fix Makefile

Makefile

@@ -1,4 +1,4 @@
-CC=gcc -Wall -ansi -G
+CC=gcc -Wall -g
 
 all: lake
 

Readme.md

@@ -0,0 +1,43 @@
+Lake Scheme
+===========
+
+A quick and dirty scheme written in C, for fun and to use while reading The Little Schemer. Very quick and dirty, a weekend hack.
+
+Compiling & Running
+===================
+
+Portable ANSI C, no deps, nothing to configure, no documentation!
+
+    $ make
+    $ ./lake
+
+That will drop you at a repl. You can type expressions and they will be echoed back to you. There are symbols, integers, strings, and lists.
+
+    > (foo bar 42 "hello" (nested list))
+    (foo bar 42 "hello" (nested list))
+
+Hooray! It parses (reads), evaluates, and then prints things back.
+
+Lake needs:
+
+  * booleans
+  * chars
+  * functions
+  * flesh out eval, write apply
+  * dotted lists
+  * primitives (especially define)
+    * define and friends
+    * branching
+    * native type operations
+      * symbol
+      * integer (math)
+      * boolean (logic)
+      * char
+      * string
+      * function
+      * list (cons, car, cdr, ...)
+      * dotted list
+  * a minimal stdlib
+  * sugar such as '... -> (quote ...)
+
+I don't think I'll need any other numeric types, but they are easy to implement anyway when performance is no concern and they're all boxed.

lake.c

@@ -5,7 +5,7 @@
   * Copyright 2011 Sami Samhuri
   * MIT License
   *
-  * A quick and dirty scheme written in C for fun and to use while
+  * A quick and dirty scheme written in C, for fun and to use while
   * reading The Little Schemer.
   *
   */

sym.c

@@ -27,7 +27,7 @@ LakeSym *sym_intern(char *s)
         sym->n = n;
         sym->s = strdup(s);
         sym->hash = ht_hash(s, n, symbols->size);
-        ht_put(symbols, sym->s, sym->n, sym, sizeof(LakeSym));
+        ht_put(symbols, sym->s, sym->n, sym, VAL_SIZE(sym));
 	}
     return sym;
 }