drop broken travis badge, replace with github actions one #2

	name: GitHub Build

	on:
	push:
	branches: [ "master" ]
	pull_request:
	branches: [ "master" ]

	permissions:
	contents: read

	jobs:
	build:
	strategy:
	matrix:
	php-versions: ['7.2', '7.4', '8.0', '8.1', '8.2', '8.3']

	runs-on: ubuntu-latest

	steps:

	- uses: actions/checkout@v4

	- name: setup PHP.
	uses: shivammathur/setup-php@v2
	with:
	php-version: ${{ matrix.php-versions }}

	- name: php version check
	run: php -v

	- name: Validate composer.json
	run: composer validate --strict

	- name: run composer (install dependencies)
	run: composer install --prefer-dist --no-progress

	- name: run psalm (static analysis)
	run: vendor/bin/psalm

	- name: run unit tests
	run: composer test

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