update README

add DownloadProgress and UploadProgress useage

README.md

@@ -225,12 +225,29 @@ req.Post(url, req.FileUpload{
 	FileName:  "avatar.png", //Filename is the name of the file that you wish to upload. We use this to guess the mimetype as well as pass it onto the server
 })
 ```
+Use `req.UploadProgress` to listen upload progress
+```go
+progress := func(current, total int64) {
+	fmt.Println(float32(current)/float32(total)*100, "%")
+}
+req.Post(url, req.File("/Users/roc/Pictures/*.png"), req.UploadProgress(progress))
+fmt.Println("upload complete")
+```
 
 ## <a name="Download">Download</a>
 ``` go
 r, _ := req.Get(url)
 r.ToFile("imroc.png")
 ```
+Use `req.DownloadProgress` to listen download progress
+```go
+progress := func(current, total int64) {
+	fmt.Println(float32(current)/float32(total)*100, "%")
+}
+r, _ := req.Get(url, req.DownloadProgress(progress))
+r.ToFile("hello.mp4")
+fmt.Println("download complete")
+```
 
 ## <a name="Cookie">Cookie</a>
 By default, the underlying `*http.Client` will manage your cookie(send cookie header to server automatically if server has set a cookie for you), you can disable it by calling this function :

doc/README_cn.md

@@ -218,12 +218,29 @@ req.Post(url, req.FileUpload{
 	FileName:  "avatar.png", // Filename 是要上传的文件的名称，我们使用它来猜测mimetype，并将其上传到服务器上
 })
 ```
+使用`req.UploadProgress`监听上传进度
+```go
+progress := func(current, total int64) {
+	fmt.Println(float32(current)/float32(total)*100, "%")
+}
+req.Post(url, req.File("/Users/roc/Pictures/*.png"), req.UploadProgress(progress))
+fmt.Println("upload complete")
+```
 
 ## <a name="Download">下载</a>
 ``` go
 r, _ := req.Get(url)
 r.ToFile("imroc.png")
 ```
+使用`req.DownloadProgress`监听下载进度
+```go
+progress := func(current, total int64) {
+	fmt.Println(float32(current)/float32(total)*100, "%")
+}
+r, _ := req.Get(url, req.DownloadProgress(progress))
+r.ToFile("hello.mp4")
+fmt.Println("download complete")
+```
 
 ## <a name="Cookie">Cookie</a>
 默认情况下，底层的 `*http.Client` 会自动管理你的cookie（如果服务器给你发了cookie，之后的请求它会自动带上cookie请求头给服务器）, 你可以调用这个方法取消自动管理：