start to adding logs

src/main.rs

@@ -1,7 +1,8 @@
 use std::thread;
 //use server_conf::server_conf;
 use std::sync::{Arc, RwLock};
-
+use log::info;
+use simple_logger::SimpleLogger;
 mod client;
 mod conf;
 mod server_conf;
@@ -9,6 +10,8 @@ mod protocol;
 mod server_proxy;
 
 fn main() {
+    SimpleLogger::new().init().unwrap();
+    info!("start server");
     let servers = Arc::new(RwLock::new(conf::Config::new()));
     let s1 = servers.clone();
     let s2 = servers.clone();