docs: Add plugin description and images into README.md

Author: ByteAurora

README.md

@@ -5,23 +5,29 @@
 [![Downloads](https://img.shields.io/jetbrains/plugin/d/21896-codexp.svg)](https://plugins.jetbrains.com/plugin/21896-codexp)
 
 <!-- Plugin description -->
-The CodeXP plugin is designed to gamify your coding experience in IntelliJ IDEs. It provides the following features:
+The CodeXP plugin is designed to gamify your coding experience in IntelliJ IDEs. 
+
+## Features
+
+---
 
 - Awards experience points (xp) for various actions such as:
   - Typing
-  - Building
-  - Running
-  - Creating functions
-  - Searching
-  - Replacing
-  - Commit/Push/Pull
-- Displays effects corresponding to the actions performed.
+  - Paste
+  - Backspace / Tab
+  - Save
+  - Build / Run / Debug
+  - Other actions
 - Provides periodic challenges to keep the coding experience engaging.
 - Displays your level based on the accumulated xp, providing a fun and engaging way to track your coding activities.
 <!-- Plugin description end -->
 
+<br>
+
 ## Installation
 
+---
+
 - Using IDE built-in plugin system:
 
   <kbd>Settings/Preferences</kbd> > <kbd>Plugins</kbd> > <kbd>Marketplace</kbd> > <kbd>Search for "CodeXP"</kbd> >
@@ -34,6 +40,37 @@ The CodeXP plugin is designed to gamify your coding experience in IntelliJ IDEs.
   Download the [latest release](https://github.com/ILoveGameCoding/intellij-codexp/releases/latest) and install it manually using
   <kbd>Settings/Preferences</kbd> > <kbd>Plugins</kbd> > <kbd>⚙️</kbd> > <kbd>Install plugin from disk...</kbd>
 
+<br>
+
+## Dashboard in Light/Dark Theme
+
+---
+
+<p float="left">
+  <img src="https://github.com/ILoveGameCoding/intellij-codexp/blob/main/images/dashboard_light_1.png" width="400" />
+  <img src="https://github.com/ILoveGameCoding/intellij-codexp/blob/main/images/dashboard_light_2.png" width="400" />
+</p>
+<p float="left">
+  <img src="https://github.com/ILoveGameCoding/intellij-codexp/blob/main/images/dashboard_dark_1.png" width="400" />
+  <img src="https://github.com/ILoveGameCoding/intellij-codexp/blob/main/images/dashboard_dark_2.png" width="400" />
+</p>
+
+<br>
+
+## Completed Challenges
+
+---
+
+Completed challenges are added under the "Completed Challenges" section. Also, more difficult challenges are automatically added after you complete a challenge.
+
+![Completed Challenges](https://github.com/ILoveGameCoding/intellij-codexp/blob/main/images/completed_challenges.png)
+
+<br>
+
+## Notification
+Whenever a challenge is completed or a level up occurs, a notification is provided to inform you of the details.
+
+![Notification](https://github.com/ILoveGameCoding/intellij-codexp/blob/main/images/notification.jpg")
 
 ---
 Plugin based on the [IntelliJ Platform Plugin Template][template].