update readme with command

Author: kaxada

README.md

@@ -1,2 +1,6 @@
 # bot-scripts
 Setups up local development environment for badging-bot
+
+To run the script in order to setup the environment, open terminal in your desired folder and run
+```sh
+  source <(curl -s https://raw.githubusercontent.com/badging/bot-scripts/main/install.sh)