Update README to clarify requirements for tests involving Symplectic …

…Elements

README.md

@@ -17,21 +17,18 @@ Solenoid is a web application for sending email requests for publications to stu
 * To lint the repo: `make lint`
 * To run the app: `pipenv run solenoid`
 
-For local development and testing, the following environment variables are recommended to run the full Solenoid workflow: 
+For local development and testing, the following environment variables are recommended:
 
 ```
    DJANGO_SECRET_KEY=<random-key>
    DJANGO_DEBUG=True
    DJANGO_LOGIN_REQUIRED=True # if testing login
-   SOLENOID_ADMIN=<developer-email>
-   DJANGO_EMAIL_TESTING_MODE=True
-   DJANGO_USE_ELEMENTS=True
-   DJANGO_ELEMENTS_USER=<valid-elements-api-username>
-   DJANGO_ELEMENTS_PASSWORD=<valid-elements-api-password>
 ```
 
 The following sections provide a high-level overview for accessing Solenoid on a local machine and on Heroku. For more detailed walkthroughs and examples, please refer to our [internal documentation on Confluence (WIP)](https://mitlibraries.atlassian.net/l/cp/1hkcgkfG).
 
+**Note:** Any tests that require a connection to Symplectic Elements must be performed through the `staging` app on Heroku. This can be done by manually deploying the `mitlibraries-solenoid-staging` app with the branch pointed to the Github branch under development.
+
 ### Running Solenoid on a local machine
 
 1. Create a `.env` file at the root directory of the Solenoid repo, and set the environment variables recommended for local development and testing.