Improve docs.

README.md

@@ -3,7 +3,12 @@ redis - a node redis client
 
 This is a Redis client for node.  It is designed for node 0.2.1+ and redis 2.0.1+.
 
-Example usage:
+Most Redis commands are implemented.  The notable exceptions are PUBLISH/SUBSCRIBE, and WATCH/UNWATCH.
+These should be coming soon.
+
+## Usage
+
+Simple example:
 
     var redis = require("redis"),
         client = redis.createClient();
@@ -30,4 +35,47 @@ This will display:
     HSET: 1
     HKEYS: hashtest 1,hashtest 2
 
-More instructions will be available as soon as the tests all pass.
+Each Redis command is exposed as a function.  All functions take two arguments: an array of arguments to send to 
+Redis, and a callback to invoke when Redis sends a reply.  Future versions will support a variable argument
+scheme.
+
+For a list of Redis commands, see [Redis Command Reference](http://code.google.com/p/redis/wiki/CommandReference)
+
+The commands can be specified in uppercase or lowercase for convenience.  `client.get` is the same as `clieint.GET`.
+
+Minimal parsing is done on the replies.  Commands that return a single line reply return JavaScript Strings, 
+integer replies return JavaScript Numbers, "bulk" replies return node Buffers, and "multi bulk" replies return a 
+JavaScript Array of ndoe Buffers.
+
+`MULTI` is supported.  The syntax is a little awkward:
+
+    client.multi([
+        ["incr", ["multibar"], function (err, res) {
+            console.log(err || res);
+        }],
+        ["incr", ["multifoo"], function (err, res) {
+            console.log(err || res);
+        }]
+    ]);
+
+`MULTI` takes an Array of 3-element Arrays.  The elements are: `command`, `args`, `callback`.
+When the commands are all submitted, `EXEC` is called and the callbacks are invoked in order.
+If a command is submitted that doesn't pass the syntax check, it will be removed from the
+transaction.
+
+I guess we also need a callback when `MULTI` finishes, in case the last command gets removed from an error.
+
+
+## TODO
+
+Need to implement PUBLISH/SUBSCRIBE
+
+Need to implement WATCH/UNWATCH
+
+Queue new commands that are sent before a connection has been established.
+
+Sweeten up the syntax to support variable arguments.
+
+## Also
+
+Redis is pretty great.  This library still needs a lot of work, but it is useful for many things.  Patches welcome.