chore: update README

Author: antonreshetov

.github/FUNDING.yml

@@ -10,4 +10,4 @@ liberapay: # Replace with a single Liberapay username
 issuehunt: # Replace with a single IssueHunt username
 otechie: # Replace with a single Otechie username
 lfx_crowdfunding: # Replace with a single LFX Crowdfunding project-name e.g., cloud-foundry
-custom: ['paypal.me/antongithub', antonreshetov.gumroad.com/l/masscode-dev]
+custom: ['paypal.me/antongithub', antonreshetov.gumroad.com/l/masscode]

README.md

@@ -55,7 +55,7 @@ However, the amount of effort needed to maintain and develop new features for th
 
 [![Donate via Open Collective](https://img.shields.io/badge/donate-Open%20Collective-blue.svg?style=popout&logo=opencollective)](https://opencollective.com/masscode)
 [![Donate via PayPal](https://img.shields.io/badge/donate-PayPal-blue.svg?style=popout&logo=paypal)](https://paypal.me/antongithub)
-[![Donate via Ko-Fi](https://img.shields.io/badge/donate-Gumroad-blue?style=popout&logo=data:image/svg+xml;base64,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)](https://antonreshetov.gumroad.com/l/masscode-dev)
+[![Donate via Ko-Fi](https://img.shields.io/badge/donate-Gumroad-blue?style=popout&logo=data:image/svg+xml;base64,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)](https://antonreshetov.gumroad.com/l/masscode)
 
 </div>
 
@@ -94,6 +94,13 @@ massCode supports extensions for [VS Code](https://marketplace.visualstudio.com/
 ### Beautiful Screenshots
 Create beautiful snippet images on different backgrounds and in different modes
 
+### Developer Tools
+massCode provides developers with a range of convenient tools, such as:
+-  Text tools: Case Converter, Slug Generator, Sort Lines, URL Parser
+-  Cryptography & Security: Hash, HMAC, Password and UUID Generators
+-  Encoders & Decoders: URL, Base64
+
+
 ## Overview
 
 The goal of creating this application was mostly my own growth as a developer. Also, I wanted this project to absorb the best of such applications already on the market (both free and paid). At the same time, I wanted this project to be an open source project.