Update README.md (#48)

# *Name of the PR*

## ♻️ Current situation & Problem
*Link any open issues or pull requests (PRs) related to this PR. Please
ensure that all non-trivial PRs are first tracked and discussed in an
existing GitHub issue or discussion.*


## ⚙️ Release Notes 
*Add a bullet point list summary of the feature and possible migration
guides if this is a breaking change so this section can be added to the
release notes.*
*Include code snippets that provide examples of the feature implemented
or links to the documentation if it appends or changes the public
interface.*


## 📚 Documentation
*Please ensure that you properly document any additions in conformance
to [Spezi Documentation
Guide](https://github.com/StanfordSpezi/.github/blob/main/DOCUMENTATIONGUIDE.md).*
*You can use this section to describe your solution, but we encourage
contributors to document your reasoning and changes using in-line
documentation.*


## ✅ Testing
*Please ensure that the PR meets the testing requirements set by CodeCov
and that new functionality is appropriately tested.*
*This section describes important information about the tests and why
some elements might not be testable.*


## 📝 Code of Conduct & Contributing Guidelines 

By submitting creating this pull request, you agree to follow our [Code
of
Conduct](https://github.com/CS342/.github/blob/main/CODE_OF_CONDUCT.md)
and [Contributing
Guidelines](https://github.com/CS342/.github/blob/main/CONTRIBUTING.md):
- [ ] I agree to follow the [Code of
Conduct](https://github.com/CS342/.github/blob/main/CODE_OF_CONDUCT.md)
and [Contributing
Guidelines](https://github.com/CS342/.github/blob/main/CONTRIBUTING.md).

README.md

@@ -22,6 +22,7 @@ The CS342 2024 PRISMA application is using the [Spezi](https://github.com/Stanfo
 >
 The CS342 2024 Prisma app as of March 14, 2023 includes added functionality for push notifications, controlling personal data usage via privacy controls, and authenticated chat interface dialogue. 
 
+For the Chat Interface, to access this feature, please run the frontend + backend in the StanfordHCI/Prisma repository, so that chat is rendered on localhost, which this iOS repository depends on. Once the actual website is set up, replace the URL in ChatView with the permanent URL.
 
 ## CS342 2024 PRISMA Features
 The following are screenshots showing various aspects of the Prisma application.