add simbolic link to readme (#4)

README.md

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+src/README.md

src/README.md

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+# deno-slack-protocols
+
+This library is a utility for use by Slack's next-generation application
+platform, focused on remixable units of functionality encapsulated as ephemeral
+functions. It implements the rules for communication (i.e. the protocol) between
+[Slack CLI][cli] and any Slack app development SDKs.
+
+This is separate from the [deno-slack-hooks][hooks] project, which implements
+the various APIs encapsulating work delegation from the CLI to the SDK. The
+[deno-slack-hooks][hooks] project implements the API, which uses this library
+under the hood.
+
+## Requirements
+
+This library requires a recent (at least 1.22) version of
+[deno](https://deno.land).
+
+## Running Tests
+
+If you make changes to this repo, or just want to make sure things are working
+as desired, you can run:
+
+    deno task test
+
+To get a full test coverage report, run:
+
+    deno task coverage
+
+---
+
+### Getting Help
+
+We welcome contributions from everyone! Please check out our
+[Contributor's Guide](https://github.com/slackapi/deno-slack-protocols/blob/main/.github/CONTRIBUTING.md)
+for how to contribute in a helpful and collaborative way.
+
+[cli]: https://github.com/slackapi/slack-cli
+[hooks]: https://github.com/slackapi/deno-slack-hooks