📝 add repo tool install instructions

README.md

@@ -26,6 +26,10 @@ This project is not affiliated with Google, CalyxOS, Magisk or any other tool us
 $ sudo apt update
 $ sudo apt install bc curl default-jdk-headless default-jre-headless git libncurses5 libncurses5-dev libssl-dev lz4 m4 python3-lxml python3-protobuf python3-yaml python-is-python3 rsync zip
 ```
+```console
+$ curl https://storage.googleapis.com/git-repo-downloads/repo | sudo tee /usr/local/bin/repo > /dev/null
+$ sudo chmod +x /usr/local/bin/repo
+```
 
 #### Selecting a suitable storage location
 ```console