Update README.md

Added example

README.md

@@ -1,6 +1,37 @@
 actor
 =====
 
-A one file java actor library.
+A minimal java actor library.
 
-This is a simplified version of <https://github.com/edescourtis/actor>
+    package com.benbria.actor;
+
+    public class ActorExample {
+        public static void main(String[] args) throws InterruptedException {
+            Actor<String> actor = Actor.createAndStart(new Actor.Behavior<String>()
+                @Override
+                public boolean onReceive(Actor<String> self, String msg) {
+                    System.out.println("Got: " + msg);
+                    return !msg.equals("stop");
+                }
+
+                @Override
+                public void exception(Actor<String> self, Exception e) {}
+            });
+
+            actor.send("hello");
+            actor.send("world");
+            Thread.sleep(1000);
+            actor.send("stop");
+        }
+    }
+
+Output:
+<pre>
+Got: hello
+Got: world
+</pre>
+
+License
+-
+
+MIT