updates hearder information

app.py

@@ -27,7 +27,8 @@ from model import AppModel
 ## Edit and 
 DESCRIPTION = """# MMDetection
 This is an unofficial demo for [https://github.com/open-mmlab/mmdetection](https://github.com/open-mmlab/mmdetection).
-With this demo, object detection using the Mask R-CNN & Faster R-CNN model can be performed. You can upload image files, or use the example files below. 
+With this demo, object detection using the Mask R-CNN & Faster R-CNN model can be performed. 
+The demo uses the [mmcv](https://github.com/open-mmlab/mmcv) library.You can upload image files, or use the example files below. 
 For more information on the Models, find some helpful resources below. 
 - Pretrained model from [OpenMMlab](https://github.com/open-mmlab/mmdetection)
 - [Faster R-CNN Paper: Towards Real-Time Object