Update README.md

Author: wenmin-wu

README.md

@@ -93,6 +93,7 @@ Please make sure to update tests as appropriate.
 
 ## Remote Completion Server Deployment
 It's useful to deploy a remote tabnine server if you don't want to occupy too much local resources. You can build, deploy and config a remote tabnine server according to the following steps.
+**NOTE:** You need to install jupyter-tabnine with `pip3 install https://github.com/wenmin-wu/jupyter-tabnine/archive/master.zip`, because the version which fix this plugin with remote server problem haven't been relased to PyPi.
 ### Build Server Image
 **I have uploaded an image to Docker Hub, you can use it directly**
 * Install the golang (recommended version is 1.13 - 1.14)
@@ -106,8 +107,7 @@ It's useful to deploy a remote tabnine server if you don't want to occupy too mu
 ### Configure Under Nbextensions
 * Please [install Nbextensions](https://jupyter-contrib-nbextensions.readthedocs.io/en/latest/install.html) if you haven't installed.
 * Open Jupyter Notebook and go to the Nbextensions setting page, click **Jupyter TabNine**, scroll down and fill in the remote server url, e.g.
-
-
+![remote-server-url-config](images/remote-server-url-config.jpg)
 ### Stop Server
 * Simply issue `bash stop-server.sh`