Merge pull request #19 from Expensify/andrew-cla2

Update readme with CLA usage

README.md

@@ -8,6 +8,8 @@ Expensify has multiple repositories that use the same GitHub Actions workflows.
 
 ### `npmPublish.yml`
 
+Used to publish a package to [npmjs](https://www.npmjs.com/), should be triggered when code is merged into the `main` branch. 
+
 ```yml
 jobs:
   publish:
@@ -22,3 +24,13 @@ jobs:
       # Optional, Boolean, default: false
       should_run_build: true
 ```
+
+### `cla.yml`
+
+Used to check if a user has signed the [Contributor License Agreement](./CLA.md), Should be triggered when a PR is opened or updated.
+
+```yml
+jobs:
+  CLA:
+    uses: Expensify/GitHub-Actions/.github/workflows/cla.yml@main
+```