177140: Modified the content in the readme file.

Author: smukilansf3478

README.md

@@ -1,2 +1,35 @@
 # ej2-angular-tree-map
-This example demonstrates the usage of Angular TreeMap  Component in Angular 11 application.
+This example demonstrates how to use the Angular TreeMap component within an Angular 11 application. The TreeMap component is a powerful data visualization tool that displays hierarchical data as a set of nested rectangles. Each rectangle represents a data node, and its size and color can be customized based on specific values, making it ideal for visualizing large datasets in a compact and intuitive manner.
+
+Documentation: https://ej2.syncfusion.com/angular/documentation/treemap/getting-started
+
+## Project pre-requisites
+Make sure that you have the compatible versions of TypeScript and Angular in your machine before starting to work on this project:
+* Angular 4+
+* TypeScript 2.6+
+
+## How to run this application
+To run this application, you need to first clone the `ej2-angular-tree-map` repository and then navigate to the path where it has been stored in your system.
+
+To do so, open the command prompt and run the below commands one after the other.
+
+```
+git clone https://github.com/SyncfusionExamples/ej2-angular-tree-map 
+treegrid-example
+cd treegrid-example
+```
+
+## Installation
+Once done with downloading, you need to install the packages required to run this application locally. To do so, run the following command:
+
+```
+npm install
+```
+This will install all the needed Angular packages into your current project.
+
+## Running on a development server
+Run the `ng serve` command for a dev server. Navigate to `http://localhost:4200/`. The app will automatically reload if you change any of the source files.
+
+## Further help
+
+To get more help with the Angular CLI, use `ng help` or check out the [Angular CLI README](https://github.com/angular/angular-cli/blob/master/README.md).