Update 'README.md'

README.md

@@ -18,11 +18,26 @@ are simple enough that they can be reviewed interactively in 1:1 or up to 1:4
 sessions with study groups.
 
 This branch contains a prototype for a retail price scraper for getweee.com.
-To run it, install Python 3.9+, chrome, chromedriver, and the python
-dependencies:
+To run it, install:
+
+* Python 3.9+,
+* chrome,
+* chromedriver,
+* and the python depedencies:
 
 ```
 pip install -r /path/to/requirements.txt
 ```
 
+Once those are installed, install the GCP SDK:
+
+https://cloud.google.com/sdk/docs/install
+
+You will also have to log into GCP *twice*, once for the gcloud CLI tools, 
+and again for the GCP SDK libraries:
+
+https://googleapis.dev/python/google-api-core/latest/auth.html
+
+
+