[TASK] Add feature list (#148)

Co-authored-by: Łukasz Uznański <l.uznanski@macopedia.com>

README.md

@@ -7,8 +7,8 @@
 [![Latest Unstable Version](https://poser.pugx.org/ttn/tea/v/unstable.svg)](https://packagist.org/packages/ttn/tea)
 [![License](https://poser.pugx.org/ttn/tea/license.svg)](https://packagist.org/packages/ttn/tea)
 
-This TYPO3 extension is an example for writing unit and functional tests for
-Extbase/Fluid-based extensions for TYPO3 CMS using PHPUnit.
+This TYPO3 extension is an example of best practices in continuous integration and automated code checks, also
+writing unit and functional tests for Extbase/Fluid-based extensions for TYPO3 CMS using PHPUnit.
 
 It also is an example for
 [best practices for extbase/fluid](https://github.com/oliverklee/workshop-handouts/tree/main/extbase-best-practices).
@@ -16,11 +16,44 @@ It also is an example for
 For information on the different ways to execute the tests, please have a look
 at the [handout to my workshops on test-driven development (TDD)](https://github.com/oliverklee/tdd-reader).
 
-## Running the unit tests from the command line
+## Feature list
+All of those checks are available in Github Actions and in Gitlab CI.
 
-```bash
-composer ci:tests:unit
-```
+### PHP Lint check by php -l
+
+`composer ci:php:lint`
+
+### PHP CodeStyle check by [php-cs-fixer](https://github.com/FriendsOfPHP/PHP-CS-Fixer)
+
+`composer ci:php:codestyle`
+
+### PHP Sniff by phpcs [phpcs](https://github.com/squizlabs/PHP_CodeSniffer)
+
+`composer ci:php:sniff`
+
+### JSON Lint check by [jsonlint](https://github.com/Seldaek/jsonlint)
+
+`composer ci:json:lint`
+
+### YAML Lint check by [yaml-lint](https://github.com/j13k/yaml-lint)
+
+`composer ci:yaml:lint`
+
+### TypoScript Lint by [typoscript-lint](https://github.com/martin-helmich/typo3-typoscript-lint)
+
+`composer ci:ts:lint`
+
+### Runinng unit tests
+
+`composer ci:tests:unit`
+
+### Runinng functional tests tests
+
+`composer ci:tests:functional`
+
+### Runinng all tests
+
+`composer ci:tests`
 
 ## Running the tests in PhpStorm
 
@@ -73,12 +106,6 @@ In the Run configurations, copy the PHPUnit configuration and use these settings
 2. right-click on `Tests/Acceptance/StarterCest.php`
 3. Run 'Acceptance (Codeception)'
 
-## Creating new extensions with automated tests
-
-For creating new extensions, I recommend taking
-[Helmut Hummel's extension skeleton](https://github.com/helhum/ext_scaffold)
-as a starting point.
-
 ## Security
 
 Libraries and extensions do not need the security check as they should not have