Feature: App running with npm install (#1291)

* Removed enzyme-adapter-react-16 package

* Removed package and updated NSTALLATION.md

* Fixed peer dependency issue of "node-sass"

* Specified node version in INSTALLATION.md

* Merge completed

* Fixed Dropdown.Item issue

* Removed "node-sass" package.

* Fixed Dropdown.Item issue

* Specified node version ^20.0.0

* Fixed merge conflicts

* Reverted node-sass package.

INSTALLATION.md

@@ -36,6 +36,7 @@ This document provides instructions on how to set up and start a running instanc
 
 We recommend that you follow these steps before beginning development work on Talawa-Admin:
 
+1. You need to have `nodejs` installed in your machine. We recommend using Node version greater than 20.0.0. You can install it either through [nvm](https://github.com/nvm-sh/nvm) (Node Version Manager) or by visiting the official [Nodejs](https://nodejs.org/download/release/v16.20.2/) website.
 1. [Talawa-API](https://github.com/PalisadoesFoundation/talawa-api): (**This is mandatory**) The API system that the mobile app uses for accessing data. Setup your own **_local instance_**
 1. [Talawa](https://github.com/PalisadoesFoundation/talawa): (Optional) The mobile app that people will use to access Talawa's features. This may be useful if you need to verify administrative features you have added or modified.
 
@@ -83,7 +84,7 @@ For more details please refer to the installation guidelines provided in the [of
 Run the following command to install the packages and dependencies required by `talawa-admin`:
 
 ```
-npm install --legacy-peer-deps
+npm install 
 ```
 
 # Configuration