Update README and version number.

README.md

@@ -64,7 +64,7 @@ We encourage you to try it, it's easy to use, see how it works for you. We belie
 
 ### Setup / installation
 
-Install from binary [releases](https://github.com/shunfei/cronsun/releases), download and unzip.
+Install from binary [latest release](https://github.com/shunfei/cronsun/releases/latest)
 
 Or build from source, require `go >= 1.9+`
 

README_ZH.md

@@ -53,7 +53,7 @@
 
 ### 安装
 
-直接下载执行文件 [releases](https://github.com/shunfei/cronsun/releases)，解压后即可运行。
+直接下载执行文件 [latest release](https://github.com/shunfei/cronsun/releases/latest)。
 
 如果你熟悉 `Go`，也可以从源码编译, 要求 `go >= 1.9+`
 

version.go

@@ -5,7 +5,7 @@ import (
 	"runtime"
 )
 
-const Binary = "v0.2.1"
+const Binary = "v0.2.2"
 
 var (
 	Version = fmt.Sprintf("%s (build %s)", Binary, runtime.Version())