add migrate comment

README.md

@@ -5,4 +5,16 @@ pip install -r requirements.txt
 
 pip install git+https://github.com/RobWeber3/django-token.git
 
+```
+
+# migrations
+
+不要在本机上做make migrations 和migrate！
+
+```shell
+cd /home/g214/tools/nmm/NewMediaMonitoring
+git pull # enter username && password
+source .venv/bin/activate
+python manage.py make migrations
+python manage.py migrate
 ```