Merge pull request #100 from Aryan9592/patch-2

Create README.md: Added 'dotenv' module

npm_Modules/dotenv/README.md

@@ -0,0 +1,47 @@
+# Dotenv
+
+`dotenv` is an npm module that allows you to load environment variables from a .env file into your Node.js applications. It simplifies the process of managing 
+and accessing sensitive information, such as API keys, database credentials, or any other configuration values, by storing them in a separate file instead of 
+hardcoding them in your codebase. 
+
+# Installation
+
+For local installation (recommended):
+```
+  $ npm install dotenv --save
+```
+
+# Usage
+
+Create a .env file in the root of your project:
+```
+  YOUR_API_KEY = "xyz"
+  YOUR_SECRET_KEY = "abc"
+```
+
+Import and configure dotenv
+```
+  import 'dotenv/config'
+```
+
+Now `process.env` has the keys and values we defined in .env file
+```
+  /// some code
+  greatFunction(process.env.YOUR_API_KEY);
+```
+
+For more info, refer [docs](https://www.dotenv.org/docs/)
+
+
+# Features
+
+- Easy Configuration: dotenv makes it easy to configure your application by storing environment-specific variables in a .env file.
+- Separation of Concerns: By keeping sensitive information in a separate file, you can easily manage different configurations for different environments
+  (e.g., development, staging, production) without modifying your code.
+- Environment Variable Loading: dotenv automatically loads the variables from the .env file into process.env during the application startup phase.
+- Variable Parsing: The module supports parsing variables of different types, such as strings, numbers, booleans, and arrays, allowing you to handle
+  complex configuration setups.
+- Compatibility: dotenv is compatible with various frameworks and libraries, including Express, Koa, and other Node.js applications.
+- Error handling: dotenv provides error handling mechanisms, such as throwing an error if the .env file is missing or if there are any syntax errors in the file.
+- Security: By storing sensitive information in a separate .env file, you can better protect your credentials, as this file can be excluded from version
+  control systems.