Update README.md

README.md

@@ -4,8 +4,10 @@ It must be installed to `/srv/walnut/packages/pages/org.oauth3`
 
 ```bash
 git clone git@git.daplie.com:OAuth3/org.oauth3.git /srv/walnut/packages/pages/org.oauth3
+pushd /srv/walnut/packages/pages/org.oauth3
 git checkout fs-nosql
 bash ./install.sh
+popd
 ```
 
 This uses the OAuth3 JavaScript SDK `oauth3.js` as a subpackage in `/srv/walnut/packages/pages/org.oauth3/assets/org.oauth3`.