Updating README

README.md

@@ -5,7 +5,7 @@ The website for the Chicago Summer of Learning, developed by Ocupop and Mozilla.
 ## Environment
 
 Property            | Default  | Description
-------------------|----------|-------------------------
+--------------------|----------|-------------------------
 `CSOL_DB_NAME`      | `"csol"` | Name of the database.
 `CSOL_DB_USER`      | `"root"` | Database username.
 `CSOL_DB_PASS`      | `null`   | Database password.
@@ -15,7 +15,8 @@ Property          | Default  | Description
 `CSOL_AWS_SECRET`   | `null`   | AWS secret
 `CSOL_AWS_REGION`   | `null`   | AWS region (optional)
 `CSOL_AWS_BUCKET`   | `null`   | AWS bucket
-`CSOL_HOST`       | `null`   | Canonical CSOL host (eg chicagosummeroflearning.org)
+`CSOL_HOST`         | `null`   | Canonical CSOL host (eg http://chicagosummeroflearning.org)
+`CSOL_EMAIL_DOMAIN` | `null`   | Domain to send email from (if different from CSOL_HOST)
 `COOKIE_SECRET`     | `null`   | Seed for session cookie.
 `CSOL_OPENBADGER_URL`    | `null` | Openbadger API Location, http://obr.com/v2/
 `CSOL_OPENBADGER_SECRET` | `null` | A shared secret with Open Badger. Should match the OPENBADGER_JWT_SECRET variable on open badger