Bump to 1.2.1

Author: lixin9311

CHANGELOG

@@ -1,3 +1,6 @@
+1.2.1 (2017-01-22)
+    * Fix bug in handling of UDP OTA packets
+
 1.2.0 (2017-01-20)
     * Support UDP relay on server side, and OTA
     * Support "aes-[128/192/256]-ctr" encryption method (Thanks for @slurin)

README.md

@@ -1,6 +1,6 @@
 # shadowsocks-go
 
-Current version: 1.2.0 [![Build Status](https://travis-ci.org/shadowsocks/shadowsocks-go.png?branch=develop)](https://travis-ci.org/shadowsocks/shadowsocks-go)
+Current version: 1.2.1 [![Build Status](https://travis-ci.org/shadowsocks/shadowsocks-go.png?branch=develop)](https://travis-ci.org/shadowsocks/shadowsocks-go)
 
 shadowsocks-go is a lightweight tunnel proxy which can help you get through firewalls. It is a port of [shadowsocks](https://github.com/clowwindy/shadowsocks).