add CHANGELOG

CHANGELOG.md

@@ -0,0 +1,22 @@
+# Changelog
+The format is based on [Keep a Changelog](http://keepachangelog.com/) and this project adheres to [Semantic Versioning](http://semver.org/).
+
+<!-- ## [Unreleased] -->
+<!-- ### Notes -->
+<!-- - [:ledger: View file changes][Unreleased] -->
+<!-- ### Added -->
+<!-- ### Changed -->
+<!-- ### Deprecated -->
+<!-- ### Removed -->
+<!-- ### Fixed -->
+<!-- ### Security -->
+
+## [v1.1.0] - 2023-06-05
+### Notes
+- [:ledger: View file changes][v1.1.0]
+### Added
+- Proxy (middleman server) support
+- This changelog file
+
+[Unreleased]: https://GitHub.com/Koorosh14/boilerplate-telegram-bot-plugin/compare/v1.1.0...main
+[v1.1.0]: https://GitHub.com/Koorosh14/boilerplate-telegram-bot-plugin/compare/v1.0.0...v1.1.0

README.md

@@ -1,6 +1,8 @@
 # Boilerplate Telegram Bot Plugin
 
-`v1.1.0`
+`v1.1.0` ([Changelog](CHANGELOG.md))
+
+Libraries used: [PHP Telegram Bot](https://GitHub.com/php-telegram-bot/core)
 
 A boilerplate plugin for connecting a Telegram bot to your WordPress website.