Add config documentation to README

Also correct old config name used in `minimal_interview.yml`
(mostly unused, except for documentation).

Author: BryceStevenWilley

README.md

@@ -9,7 +9,22 @@ Main interviews of import:
 * any_filing_interview.yml: allows you to make any type of filing, initial or subsequent
 * admin_interview.yml: lets you handle admin / user functionality, outside of the context of cases and filings
 
-In progress!
+## Config
+
+Different parts of this package expect the below to be present in Docassemble's
+config.
+
+```yaml
+efile proxy:
+  # The URL where the Efile Proxy Server is running
+  url: https:...
+  # The Proxy Server's API Key (should be provided to you by the sever admins)
+  api key: ...
+  # If you're given an EFSP global fee waiver ID for your jurisdiction, put it here
+  global waivers:
+    illinois: ...
+    massachusetts: ...
+```
 
 ## Authors
 

docassemble/EFSPIntegration/data/questions/minimal_interview.yml

@@ -51,7 +51,7 @@ code: |
     tyler_login
     lead_contact = users[0]
     main_document.completed
-    tyler_payment_id = get_config('efile proxy', {}).get('global waiver', '')
+    tyler_payment_id = get_config('efile proxy', {}).get('global waivers', [''])[0]
     ready_to_efile
     efile
     ending_screen