chore: added quiz app screenshots in readme

README.md

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-![React Quiz App Template Cover Image](./src/assets/images/Xeven-Quiz-ReactJS-Quiz-App-Template.jpg)
+![React Quiz App Template Cover Image](./src/assets/images/ReactJS-Quiz-App-Template.jpg)
+
 # Xeven Quiz - ReactJS Quiz App Template
 
 With **Xeven Quiz**, you don't have to spend hours on coding from scratch. This Quiz App template provides a solid foundation, eliminating the need to reinvent the wheel. You'll spend less time developing your app, which lets you focus on the unique. 
@@ -23,6 +24,8 @@ With **ReactJS** at its core, it lets you design dynamic interfaces that automat
 
 **Styled Components** ensure fast and intuitive styling, allowing you to create stunning interfaces effortlessly.
 
+![React Quiz App Template](./src/assets/images/Xeven-Quiz-App-Screenshots.png)
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 ## React Quiz App's Theme Features
 
 Before I explain the technical aspects of the quiz app, let me share the wonderful features of the quiz app. You can get all these features in a template and mold them according to your choice.
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 - **Built with React Best Practices**: App follows industry-leading React practices. Our template ensures optimal structure, scalability, and maintainability.
 
+![types of questions](./src/assets/images/3-types-of-questions.png)
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 ## Xeven Quiz - ReactJS Quiz App Template Code Documentations
 
 This guide will walk you through the steps to start using and customizing the app according to your needs. The Xeven Quiz is designed to help you create interactive quizzes with various question types, including Multiple Choice Questions (MCQs), Multiple Answer Questions (MAQs), and True/False questions.