CHANGELOG.md in wechat-jsapi-0.1 vs CHANGELOG.md in wechat-jsapi-0.1.1

@@ -1,5 +1,10 @@
 # Wechat JS API Change Log 微信JS API库变更日志
 
 ## v0.1
 1. Signature class
-2. Ticket class
+2. Ticket wrapper class
+
+## v0.1.1
+1. Improve the Ruby Gem Specification to depend on [wechat-core](https://github.com/topbitdu/wechat-core) v0.4
+2. Improve the Signature class for the argument validation
+3. Improve the Ticket wrapper class for the argument validation & HTTP request