Add readme

Readme.md

+This page is for Dr. Meyer at CSUSB. 
+
+Download all four YAML files to your local computer.
+
+In the folder with the YAML files excute the following commands to start Jupyter notebook
+
+### To start SageMath Jupyer Notebook 
+
+`kubectl create -f pvc-sagemath.yaml -n change-this-to-your-name-space`
+`kubectl create -f depolyment-sagemath.yaml -n change-this-to-your-name-space`
+`kubectl get pods -n change-this-to-your-name-space`
+If the container is created, copy its name (the farest left one).
+`kubectl logs put-pod-name -n change-this-to-your-name-space`
+If the container is successfully created it will show you token number.
+`kubectl create -f service-clusterip.yml -n change-this-to-your-name-space`
+
+### Two ways to connect (both web-based)
+1. If you want to connect it without exposing the IP publically, 
+`kubectl port-forward service/sagemath 8888:8888`
+Open your browser then type `https://localhost:127.0.0.0:8888'
+2. If you want to expose the IP publically,
+`kubectl create -f ingress-sagemath.yaml -n change-this-to-your-name-space`
+Connect to your Jupyer Notebook via https://sagemath.nrp-nautilus.io/
+
+### How to release resources
+* **pvc-sagemath.yaml** should be kept until the end of your project to store files. 
+* All other recourses should be release when not in use.
+* Use `kubectl get deployment,service,ingress -n change-this-to-your-name-space` to search for resources being used. And use the following to delete each item.
+    * `kubectl create -f ingress-sagemath.yaml -n change-this-to-your-name-space`
+    * `kubectl create -f service-clusterip.yml -n change-this-to-your-name-space`
+    * `kubectl create -f depolyment-sagemath.yaml -n change-this-to-your-name-space`
+_Caveat_ if you are running only one project, you can also use 
+`kubectl delete ingress,service,deployment --all -n change-this-to-your-name-space` 
+to delete them all except your persistent storage. 
+
+To delete the persistent storage use 
+`kubectl delete -f pvc-sagemath.yaml -n change-this-to-your-name-space`
+
+