add cd

Author: vict0rsch

README.md

@@ -22,6 +22,7 @@ In this section we'll explain how to produce the `Painted Input` along with the
 
 ```bash
 $ git clone git@github.com:cc-ai/climategan.git
+$ cd climategan
 $ pip install -r requirements-3.8.2.txt # or `requirements-any.txt` for other Python versions (not tested but expected to be fine)
 ```