Install cakephp with composer.

composer.json

{
  "minimum-stability": "dev",
  "config": {
      "vendor-dir": "Vendor"
  },
  "repositories" : [
    {
      "type": "package",
      "package": {
        "name" : "cakephp/cakephp",
        "version" : "2.4.1",
        "source" : {
          "type" : "git",
          "url" : "git://github.com/cakephp/cakephp.git",
          "reference" : "2.4.1"
        },
        "bin" : ["lib/Cake/Console/cake"]
      }
    }
  ],
  "extra": {
    "installer-paths": {
      "app/Plugin/DebugKit": ["cakephp/debug_kit"]
    }
  },
  "require" : {
    "php": ">=5.2",
    "cakephp/cakephp" : "2.4.1",
    "cakephp/debug_kit": "2.2.*"
  }
}