Update Readme

Setup using root
Use pip to install pipenv

README.md

@@ -10,6 +10,8 @@ This assumes you are using Ubuntu-20.04
 
 ### Install packages
 
+`sudo su -`
+
 `wget -q -O - https://packages.grafana.com/gpg.key | sudo apt-key add -`
 
 `echo "deb https://packages.grafana.com/oss/deb stable main" | sudo tee -a /etc/apt/sources.list.d/grafana.list`
@@ -22,7 +24,9 @@ This assumes you are using Ubuntu-20.04
 
 `sudo apt update`
 
-`sudo apt install python3-pipenv nginx mosquitto grafana influxdb python3-certbot-nginx`
+`sudo apt install python3-pip nginx mosquitto grafana influxdb python3-certbot-nginx`
+
+`pip3 install pipenv`
 
 ### Setup Nginx