readme file update: to explain environment files needed

README.md

@@ -23,6 +23,20 @@ Check the HTTP API section below for specific endpoints that can be queried via
 
 ## Initial Setup
 
+### Environment files
+Create the following file that will contain the environment variables we need to login to APIs:
+`credentials.env`
+```
+# Twitter stuff doesnt work right now.
+# twitter_bearer_token=
+# twitter_api_key=
+# twitter_access_token_secret=
+# twitter_access_token=
+# twitter_api_key_secret=
+
+github_api_token=
+```
+
 ### Build container
 `docker-compose build`