Updated readme.

README.md

@@ -1,2 +1,15 @@
 # DeserLab
 Java deserialization exploitation lab.
+
+Simple Java client and server application that implements a custom network protocol using the Java serialization format to demonstrate Java deserialization vulnerabilities.
+
+## Usage
+First launch the server-side component as follows:
+
+    DeserLab.jar -server <listen-address> <listen-port>
+
+Next, use the client to interact with the server component as follows:
+
+    DeserLab.jar -client <server-address> <server-port>
+
+Now pop some calcs ;)