<NME> start_server.sh
<BEF> ADDFILE
<MSG> add example snapshot

<DFF> @@ -0,0 +1,5 @@
+#!/usr/bin/env bash
+
+mvn clean package
+mvn dependency:copy-dependencies
+java -Dcom.wenweihu86.raft.data.dir=/Users/baidu/raft-java-example/data -cp target/classes:target/dependency/* com.wenweihu86.raft.example.ServerMain 1 127.0.0.1:8050:1;127.0.0.1:8051:2;127.0.0.1:8052:3

add example snapshot