update the Readme

Author: das1396

Interfacing SIM800L with ESP32/README.md

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+# [ESP32 Timers](https://circuitdigest.com/microcontroller-projects/)
+
+<img src="https://github.com/Circuit-Digest/Basic-ESP32-Tutorials/blob/main/Interfacing%20SIM800L%20with%20ESP32/images/title%20_image.jpg" width="" alt="alt_text" title="image_tooltip">
+<br>
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+<br>
+<a href="https://circuitdigest.com/tags/ESP32"><img src="https://img.shields.io/static/v1?label=&labelColor=505050&message=ESP32 Tutorials Circuit Digest&color=%230076D6&style=social&logo=google-chrome&logoColor=%230076D6" alt="circuitdigest"/></a>
+<br>
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+[<h1>Click here](https://circuitdigest.com/tags/ESP32) For other ESP32 tutorials.</h1>
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+
+<br>
+<br>
+
+ Let's say you are trying to build a remote IoT data monitoring system, the first problem you will face is how to get a 
+ proper internet connection for your device. Whether you want to get notified when someone enters your room or you want 
+ to water your plants from miles away, the internet is always a problem. In this type of situation, SIM800L GSM/GPRS Module
+ can come in very handy. SIM800L is a very compact GSM/GPRS module that can be integrated into a lot of IoT projects due to 
+ its compact size and flexibility. This module can do anything that a normal cell phone can do like text message, make and 
+ receive phone calls and connect to the internet through GPRS and on top of that, it supports quad-band GSM/GPRS means it
+ can work anywhere in the world.
+
+<br>
+<br>
+[Note: As this projects are very simple we are only providing the code, schemaitic, and a few essential images if you want to get the images or code explanations do check out the Circuit Digest website.
+<br>
+<br>