add some lua library

lua-protobuf/test.lua

@@ -0,0 +1,30 @@
+require "protobuf"
+
+addr = io.open("addressbook.pb","rb")
+buffer = addr:read "*a"
+addr:close()
+
+protobuf.register(buffer)
+
+addressbook = {
+	name = "Alice",
+	id = 12345,
+	phone = {
+		{ number = "1301234567" },
+		{ number = "87654321", type = "WORK" },
+	}
+}
+
+code = protobuf.encode("tutorial.Person", addressbook)
+
+decode = protobuf.decode("tutorial.Person" , code)
+
+print(decode.name)
+print(decode.id)
+for _,v in ipairs(decode.phone) do
+	print("\t"..v.number, v.type)
+end
+
+phonebuf = protobuf.pack("tutorial.Person.PhoneNumber number","87654321")
+buffer = protobuf.pack("tutorial.Person name id phone", "Alice", 123, { phonebuf })
+print(protobuf.unpack("tutorial.Person name id phone", buffer))