Update README

README.md

@@ -6,6 +6,17 @@ YouTube video walkthrough with explanations here:
 
 This sample app shows you how to use slivers with some practical examples.
 
+## Included
+
+- [CustomScrollView](https://api.flutter.dev/flutter/widgets/CustomScrollView-class.html)
+- [SliverAppBar](https://api.flutter.dev/flutter/material/SliverAppBar-class.html)
+- [SliverPersistentHeader](https://api.flutter.dev/flutter/widgets/SliverPersistentHeader-class.html)
+- [SliverList](https://api.flutter.dev/flutter/widgets/SliverList-class.html) & [SliverFixedExtentList](https://api.flutter.dev/flutter/widgets/SliverFixedExtentList-class.html)
+- [SliverGrid](https://api.flutter.dev/flutter/widgets/SliverGrid-class.html)
+- [SliverToBoxAdapter](https://api.flutter.dev/flutter/widgets/SliverToBoxAdapter-class.html)
+- [SliverFillRemaining](https://api.flutter.dev/flutter/widgets/SliverFillRemaining-class.html)
+
+
 ### For more articles and video tutorials, check out [Coding With Flutter](https://codingwithflutter.com/).