{
  "name": "uomcs/openbadges-backend",
  "description": "Backend code and schema for OpenBadges",
  "repositories": [
    {
      "type": "composer",
      "url": "https://packages.zendframework.com/"
    },
    {
      "type": "vcs",
      "url": "https://github.com/UoMCS/openbadges-backend"
    },
    {
      "type": "vcs",
      "url": "https://github.com/UoMCS/php-png"
    }
  ],
  "autoload": {
    "psr-4": { "OpenBadges\\": "src/" }
  },
  "license": "MIT",
  "require": {
    "zendframework/zend-http": "2.*",
    "silex/silex": "~1.2",
    "uomcs/php-png": "dev-master"
  }
}

{
  "name": "uomcs/openbadges-backend",
  "description": "Backend code and schema for OpenBadges",
  "repositories": [
    {
      "type": "composer",
      "url": "https://packages.zendframework.com/"
    },
    {
      "type": "vcs",
      "url": "https://github.com/UoMCS/openbadges-backend"
    }
  ],
  "autoload": {
    "psr-4": { "OpenBadges\\": "src/" }
  },
  "license": "MIT",
  "require": {
    "zendframework/zend-http": "2.*",
    "silex/silex": "~1.2",
    "uomcs/php-png": "dev-master"
  }
}

Remove repository link as PNG library is in Composer
Remove repository link as PNG library is in Composer
