composer.json

{
  "name": "snk/magento2-module-captcha",
  "description": "Extension for standard magento 2 capctah that adds Math Captcha",
  "type": "magento2-module",
  "require": {
    "magento/framework": "*",
    "magento/module-captcha": "100.3.*"
  },
  "license": [
    "MIT"
  ],
  "autoload": {
    "files": [
      "src/registration.php"
    ],
    "psr-4": {
      "Snk\\Captcha\\": "src"
    }
  }
}