Implemented LASTSAVE

src/main/java/redis/clients/jedis/Client.java

@@ -523,4 +523,8 @@ public class Client extends Connection {
     public void bgrewriteaof() {
 	sendCommand("BGREWRITEAOF");
     }
+
+    public void lastsave() {
+	sendCommand("LASTSAVE");
+    }
 }

src/main/java/redis/clients/jedis/Jedis.java

@@ -617,4 +617,9 @@ public class Jedis {
 	client.bgrewriteaof();
 	return client.getStatusCodeReply();
     }
+
+    public int lastsave() {
+	client.lastsave();
+	return client.getIntegerReply();
+    }
 }