Readme

FrankSalad · FrankSalad · commit 9a43e11ddeda · 2017-01-07T20:10:03.000-06:00
diff --git a/docs/api/database.md b/docs/api/database.md
@@ -25,6 +25,14 @@ firestack.database()
   });
 ```
 
+Test value exists at location:
+```javascript
+firestack.database()
+  .ref('posts/1234')
+  .exists();
+```
+
+
 ## Unmounted components
 
 Listening to database updates on unmounted components will trigger a warning:
