diff --git a/README.md b/README.md
index 74ed7c4..9ef35dc 100755
--- a/README.md
+++ b/README.md
@@ -25,10 +25,13 @@
 
 - **Cross-platform**. Supporting Windows, Mac OS X and Linux.
 - **Safe**. By ***checking potential conflicts and errors***.
-- **File filtering**. Including and excluding files via regular expression.
+- **File filtering**. Supporting including and excluding files via regular expression.
     No need to run commands like `find ./ -name "*.html" -exec CMD`.
 - **Recursively renaming both files and directories**.
 - **Supporting dry run**.
+- **Colorful output**. Screenshots:
+    ![linux](screenshot/linux.png)
+    ![windows](screenshot/windows.png)
 
 ## Installation
 
@@ -38,18 +41,18 @@
 
 #### Method 1: Download binaries
 
-[brename v2.1.1](https://github.com/shenwei356/brename/releases/tag/v2.1.1)
-[![Github Releases (by Release)](https://img.shields.io/github/downloads/shenwei356/brename/v2.1.1/total.svg)](https://github.com/shenwei356/brename/releases/tag/v2.1.1)
+[brename v2.1.2](https://github.com/shenwei356/brename/releases/tag/v2.1.2)
+[![Github Releases (by Release)](https://img.shields.io/github/downloads/shenwei356/brename/v2.1.2/total.svg)](https://github.com/shenwei356/brename/releases/tag/v2.1.2)
 
 
 OS     |Arch      |File, (mirror为中国用户下载镜像链接)                                                                                                                                                                         |Download Count
 :------|:---------|:--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|:-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
-Linux  |32-bit    |[brename_linux_386.tar.gz](https://github.com/shenwei356/brename/releases/download/v2.1.1/brename_linux_386.tar.gz), ([mirror](http://app.shenwei.me/data/brename/brename_linux_386.tar.gz))                            |[![Github Releases (by Asset)](https://img.shields.io/github/downloads/shenwei356/brename/latest/brename_linux_386.tar.gz.svg?maxAge=3600)](https://github.com/shenwei356/brename/releases/download/v2.1.1/brename_linux_386.tar.gz)
-Linux  |**64-bit**|[**brename_linux_amd64.tar.gz**](https://github.com/shenwei356/brename/releases/download/v2.1.1/brename_linux_amd64.tar.gz), ([mirror](http://app.shenwei.me/data/brename/brename_linux_amd64.tar.gz))                  |[![Github Releases (by Asset)](https://img.shields.io/github/downloads/shenwei356/brename/latest/brename_linux_amd64.tar.gz.svg?maxAge=3600)](https://github.com/shenwei356/brename/releases/download/v2.1.1/brename_linux_amd64.tar.gz)
-OS X   |32-bit    |[brename_darwin_386.tar.gz](https://github.com/shenwei356/brename/releases/download/v2.1.1/brename_darwin_386.tar.gz), ([mirror](http://app.shenwei.me/data/brename/brename_darwin_386.tar.gz))                         |[![Github Releases (by Asset)](https://img.shields.io/github/downloads/shenwei356/brename/latest/brename_darwin_386.tar.gz.svg?maxAge=3600)](https://github.com/shenwei356/brename/releases/download/v2.1.1/brename_darwin_386.tar.gz)
-OS X   |**64-bit**|[**brename_darwin_amd64.tar.gz**](https://github.com/shenwei356/brename/releases/download/v2.1.1/brename_darwin_amd64.tar.gz), ([mirror](http://app.shenwei.me/data/brename/brename_darwin_amd64.tar.gz))               |[![Github Releases (by Asset)](https://img.shields.io/github/downloads/shenwei356/brename/latest/brename_darwin_amd64.tar.gz.svg?maxAge=3600)](https://github.com/shenwei356/brename/releases/download/v2.1.1/brename_darwin_amd64.tar.gz)
-Windows|32-bit    |[brename_windows_386.exe.tar.gz](https://github.com/shenwei356/brename/releases/download/v2.1.1/brename_windows_386.exe.tar.gz), ([mirror](http://app.shenwei.me/data/brename/brename_windows_386.exe.tar.gz))          |[![Github Releases (by Asset)](https://img.shields.io/github/downloads/shenwei356/brename/latest/brename_windows_386.exe.tar.gz.svg?maxAge=3600)](https://github.com/shenwei356/brename/releases/download/v2.1.1/brename_windows_386.exe.tar.gz)
-Windows|**64-bit**|[**brename_windows_amd64.exe.tar.gz**](https://github.com/shenwei356/brename/releases/download/v2.1.1/brename_windows_amd64.exe.tar.gz), ([mirror](http://app.shenwei.me/data/brename/brename_windows_amd64.exe.tar.gz))|[![Github Releases (by Asset)](https://img.shields.io/github/downloads/shenwei356/brename/latest/brename_windows_amd64.exe.tar.gz.svg?maxAge=3600)](https://github.com/shenwei356/brename/releases/download/v2.1.1/brename_windows_amd64.exe.tar.gz)
+Linux  |32-bit    |[brename_linux_386.tar.gz](https://github.com/shenwei356/brename/releases/download/v2.1.2/brename_linux_386.tar.gz), ([mirror](http://app.shenwei.me/data/brename/brename_linux_386.tar.gz))                            |[![Github Releases (by Asset)](https://img.shields.io/github/downloads/shenwei356/brename/latest/brename_linux_386.tar.gz.svg?maxAge=3600)](https://github.com/shenwei356/brename/releases/download/v2.1.2/brename_linux_386.tar.gz)
+Linux  |**64-bit**|[**brename_linux_amd64.tar.gz**](https://github.com/shenwei356/brename/releases/download/v2.1.2/brename_linux_amd64.tar.gz), ([mirror](http://app.shenwei.me/data/brename/brename_linux_amd64.tar.gz))                  |[![Github Releases (by Asset)](https://img.shields.io/github/downloads/shenwei356/brename/latest/brename_linux_amd64.tar.gz.svg?maxAge=3600)](https://github.com/shenwei356/brename/releases/download/v2.1.2/brename_linux_amd64.tar.gz)
+OS X   |32-bit    |[brename_darwin_386.tar.gz](https://github.com/shenwei356/brename/releases/download/v2.1.2/brename_darwin_386.tar.gz), ([mirror](http://app.shenwei.me/data/brename/brename_darwin_386.tar.gz))                         |[![Github Releases (by Asset)](https://img.shields.io/github/downloads/shenwei356/brename/latest/brename_darwin_386.tar.gz.svg?maxAge=3600)](https://github.com/shenwei356/brename/releases/download/v2.1.2/brename_darwin_386.tar.gz)
+OS X   |**64-bit**|[**brename_darwin_amd64.tar.gz**](https://github.com/shenwei356/brename/releases/download/v2.1.2/brename_darwin_amd64.tar.gz), ([mirror](http://app.shenwei.me/data/brename/brename_darwin_amd64.tar.gz))               |[![Github Releases (by Asset)](https://img.shields.io/github/downloads/shenwei356/brename/latest/brename_darwin_amd64.tar.gz.svg?maxAge=3600)](https://github.com/shenwei356/brename/releases/download/v2.1.2/brename_darwin_amd64.tar.gz)
+Windows|32-bit    |[brename_windows_386.exe.tar.gz](https://github.com/shenwei356/brename/releases/download/v2.1.2/brename_windows_386.exe.tar.gz), ([mirror](http://app.shenwei.me/data/brename/brename_windows_386.exe.tar.gz))          |[![Github Releases (by Asset)](https://img.shields.io/github/downloads/shenwei356/brename/latest/brename_windows_386.exe.tar.gz.svg?maxAge=3600)](https://github.com/shenwei356/brename/releases/download/v2.1.2/brename_windows_386.exe.tar.gz)
+Windows|**64-bit**|[**brename_windows_amd64.exe.tar.gz**](https://github.com/shenwei356/brename/releases/download/v2.1.2/brename_windows_amd64.exe.tar.gz), ([mirror](http://app.shenwei.me/data/brename/brename_windows_amd64.exe.tar.gz))|[![Github Releases (by Asset)](https://img.shields.io/github/downloads/shenwei356/brename/latest/brename_windows_amd64.exe.tar.gz.svg?maxAge=3600)](https://github.com/shenwei356/brename/releases/download/v2.1.2/brename_windows_amd64.exe.tar.gz)
 
 
 Just [download](https://github.com/shenwei356/brename/releases) compressed
@@ -81,7 +84,7 @@ And then:
 ```
 brename -- a cross-platform command-line tool for safely batch renaming files/directories via regular expression
 
-Version: 2.1.1
+Version: 2.1.2
 
 Author: Wei Shen <shenwei356@gmail.com>
 
diff --git a/brename.go b/brename.go
index 6d4f035..6e66291 100644
--- a/brename.go
+++ b/brename.go
@@ -33,13 +33,13 @@ import (
 
 	"github.com/fatih/color"
 	"github.com/mattn/go-colorable"
-	"github.com/op/go-logging"
+	"github.com/shenwei356/go-logging"
 	"github.com/spf13/cobra"
 )
 
 var log *logging.Logger
 
-var version = "2.1.1"
+var version = "2.1.2"
 var app = "brename"
 
 // Options is the struct containing all global options
@@ -134,7 +134,7 @@ func getOptions(cmd *cobra.Command) *Options {
 func init() {
 	logFormat := logging.MustStringFormatter(`%{color}[%{level:.4s}]%{color:reset} %{message}`)
 	var stderr io.Writer = os.Stderr
-	if isWindows {
+	if runtime.GOOS == "windows" {
 		stderr = colorable.NewColorableStderr()
 	}
 	backend := logging.NewLogBackend(stderr, "", 0)
@@ -397,8 +397,6 @@ var yellow = color.New(color.FgYellow).SprintFunc()
 var red = color.New(color.FgRed).SprintFunc()
 var green = color.New(color.FgGreen).SprintFunc()
 
-var isWindows = runtime.GOOS == "windows"
-
 func (c code) String() string {
 	switch c {
 	case codeOK:
diff --git a/screenshot/linux.png b/screenshot/linux.png
new file mode 100644
index 0000000..cdd862f
Binary files /dev/null and b/screenshot/linux.png differ
diff --git a/screenshot/windows.png b/screenshot/windows.png
new file mode 100644
index 0000000..04ba3b2
Binary files /dev/null and b/screenshot/windows.png differ