diff --git a/README.md b/README.md
index 5059a3a..8261c92 100644
--- a/README.md
+++ b/README.md
@@ -58,6 +58,8 @@ ionic cordova platform add android
 
 ## Build and run using ionic framework
 
+Copy src/providers/pnut-oauth.ts.sample to src/providers/pnut-oauth.ts and include the client ID provided by pnut.io. See the [developer documentation](https://pnut.io/docs/api/implementation/overview) for more details.
+
 #### Browser
 ```bash
 ionic serve --lab