[docs] Updating the README to be more... well, just *more*

README.md

@@ -1,2 +1,37 @@
-Not much to see here.  Just practicing a few things.  If you're
+# A Collection of Interpreters from Lisp In Small Pieces, written in Coffeescript
-expecting miracles, this isn't the place for it.
+
+## Purpose
+
+I don't know Lisp, so I figured the correct place to start was to write
+my own interpreter.  After buying five different textbooks (*The
+Structure and Interpretation of Computer Programs*, aka "The Wizard
+Book", Friedman's *The Essentials of Programming Languages*, *Let over
+Lambda*, *On Lisp*, and finally *Lisp In Small Pieces*, I decided the
+last one gave the clearest step-by-step introduction. 
+
+Since I didn't know Lisp, my task was to translate what Quiennec wrote
+in his book into a language I *did* know: Javascript.  Well,
+Coffeescript, which is basically Javascript with a lot of the
+syntactical noise removed, which is why I liked it.
+
+## Usage
+
+I don't know if you're going to get much out of it, but the reader
+(which I had to write by hand, seeing as I didn't *have* a native Lisp
+reader on hand in my Javascripty environment), and each interpreter has
+a fairly standard test case that demonstrates that each language does
+what it says it does: you can do math, set variables, name and create
+functions, and even do recursion.
+
+## Notes
+
+chapter-lambda-1 is not from Lisp In Small Pieces.  It is a primitive
+CPS interpreter built on top of the interpreter from LiSP Chapter 1,
+using techniques derived from a fairly facile reading of 
+<a href="http://lisperator.net/pltut/">Lisperator's "Implement A
+Programming Language in Javascript."  But it was fun.
+
+## LICENSE AND COPYRIGHT NOTICE: NO WARRANTY GRANTED OR IMPLIED
+
+See the LICENSE file.
+