Update readme and license

Author: denpamusic

LICENSE

@@ -1,6 +1,6 @@
 The MIT License
 
-Copyright (c) 2017-2018 Netfleet Co. Ltd.
+Copyright (c) 2017-2022 denpamusic
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

README.md

@@ -2,10 +2,9 @@
 
 [![Latest Stable Version](https://poser.pugx.org/denpa/php-bitcoinrpc/v/stable)](https://packagist.org/packages/denpa/php-bitcoinrpc)
 [![License](https://poser.pugx.org/denpa/php-bitcoinrpc/license)](https://packagist.org/packages/denpa/php-bitcoinrpc)
-[![Build Status](https://travis-ci.org/denpamusic/php-bitcoinrpc.svg)](https://travis-ci.org/denpamusic/php-bitcoinrpc)
+[![ci](https://github.com/denpamusic/php-bitcoinrpc/actions/workflows/ci.yml/badge.svg)](https://github.com/denpamusic/php-bitcoinrpc/actions/workflows/ci.yml)
 [![Code Climate](https://codeclimate.com/github/denpamusic/php-bitcoinrpc/badges/gpa.svg)](https://codeclimate.com/github/denpamusic/php-bitcoinrpc)
 [![Code Coverage](https://codeclimate.com/github/denpamusic/php-bitcoinrpc/badges/coverage.svg)](https://codeclimate.com/github/denpamusic/php-bitcoinrpc/coverage)
-[![Join the chat at https://gitter.im/php-bitcoinrpc/Lobby](https://badges.gitter.im/php-bitcoinrpc/Lobby.svg)](https://gitter.im/php-bitcoinrpc/Lobby?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 
 ## Installation
 Run ```php composer.phar require denpa/php-bitcoinrpc``` in your project directory or add following lines to composer.json
@@ -17,7 +16,7 @@ Run ```php composer.phar require denpa/php-bitcoinrpc``` in your project directo
 and run ```php composer.phar install```.
 
 ## Requirements
-PHP 7.1 or higher  
+PHP 8.0 or higher  
 _For PHP 5.6 and 7.0 use [php-bitcoinrpc v2.0.x](https://github.com/denpamusic/php-bitcoinrpc/tree/2.0.x)._
 
 ## Usage