Update README.md

Author: whatsupcoders

README.md

@@ -18,6 +18,38 @@ This file contains a number of Flutter interview questions.
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+---
+Title: Flutter Interview Questions
+---
+
+* What is the difference between Stateless and Stateful Widget in Flutter?
+* Explain Stateful Widget Lifecycle?
+* When to use WidgetsBindingObserver?
+* What is a Flutter Tree Shaking?
+* What is a Spacer Widget?
+* Difference between HotRestart and Hot Reload?
+* What is an Inherited Widget and list some examples?
+* Why is the build() method on State and not Stateful Widget?
+* What is a Pub file in Dart?
+* How is Flutter native?
+* What is a Navigator and Routes in Flutter?
+* What is a PageRoute?
+* Explain async,await and Future?
+* How do I update ListView dynamically?
+* What is a Streams?
+* What are keys in Flutter and when to use it ?
+* What are Global Keys?
+* When to use main Axis Alignment and cross Axis Alignment ?
+* when do we use double.INFINITY?
+* What is Ticker, Tween and Animated Builder ?
+* What is an Ephemeral state?
+* What is the role of a Change Notifier Provider?
+* What is a ValueListenableBuilder?
+* What is an AspectRatio?
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 ## Getting Involved
 
   1. [How to Contribute](https://github.com/whatsupcoders/Flutter-Interview-Questions/blob/master/CONTRIBUTING.md)