Kirby 2.4 with composer

This works now:

{
  "name": "your-company/your-project",
  "require": {
    "mnsami/composer-custom-directory-installer": "1.1.*",
    "getkirby/kirby": "^2.4"
  },
  "extra": {
    "installer-paths": {
      "./kirby": ["getkirby/kirby"],
      "./kirby/toolkit": ["getkirby/toolkit"],
      "./panel": ["getkirby/panel"]
    }
  }
}