rewrite makefile, and remove luacode cache.

examples/agent.lua

@@ -0,0 +1,19 @@
+local skynet = require "skynet"
+local client = ...
+
+skynet.register_protocol {
+	name = "client",
+	id = skynet.PTYPE_CLIENT,
+	pack = function(...) return ... end,
+	unpack = skynet.tostring,
+	dispatch = function (session, address, text)
+		-- It's client, there is no session
+		--	skynet.send("LOG", "text", "client message :" .. text)
+		local result = skynet.call("SIMPLEDB", "text", text)
+		skynet.ret(result)
+	end
+}
+
+skynet.start(function()
+	skynet.send(client,"text","Welcome to skynet")
+end)