docs: Add a note about how to update to latest Core SDK submodule (temporalio#123)

vkarpov15 · web-flow · commit bfbc5a97d696 · 2021-06-23T17:12:55.000Z
* docs: Add a note about how to update to latest Core SDK submodule

* docs: Recommend using npm run build over npm ci based on comments
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
@@ -26,6 +26,8 @@ You will need to submit a CLA before we can accept your contribution. You only h
 
 > For cross compilation on MacOS follow [these](https://github.com/temporalio/sdk-node/blob/main/docs/building.md) instructions.
 
+To update your environment, run `git submodule update` to update to the latest version of the Core SDK, followed by `npm run build` to recompile.
+
 ### Development Workflow
 
 After your environment is set up, you can run these commands:
