Update README.md

Author: BzCoder

README.md

@@ -47,13 +47,27 @@ gradle添加：
                         .withMaxWidth(1920)
                         //最大图片大小 单位MB
                         .withMaxImageSize(5)
+			 //设置图片加载引擎
+                        .withImageEngine(new Glide4Engine())
                         .build()
                         .show();
+			
+			
 ```
 
-获取选择的资源：
+获取选择的资源以及一些方便的小工具：
 
 ```java
     protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
         List<String> resultData = SmartMediaPicker.getResultData(this, requestCode, resultCode, data);
+        if (resultData != null && resultData.size() > 0) {
+            tv_path.setText(Arrays.toString(resultData.toArray()) + "\n文件类型："
+                    + SmartMediaPicker.getFileType(resultData.get(0)) + "\n视频时长" +
+                    (SmartMediaPicker.getFileType(resultData.get(0)).contains("video") ?
+                            SmartMediaPicker.getVideoDuration(resultData.get(0)) : ""));
+
+        } else {
+            tv_path.setText("NO DATA");
+        }
+    }
 ```