devDependencies get installed with grunt-contrib

[coderarity]

Hey,

A user is having an issue where devDependencies are getting installed on the drone and his deploy fails. I was able to reproduce the issue by deploying this package.json:

{
  "name": "devdep2",
  "version": "0.0.1-2",
  "subdomain": "devdep2",
  "devDependencies": {
    "grunt-contrib": "*",
    "grunt": "*"
  },
  "dependencies": {
    "deep-equal": "*"
  },
  "scripts": {
    "start": "server.js"
  },
  "engines": {
    "node": "0.8.x"
  }
}

I tried this package.json without grunt-contrib and it installed fine, so that module may be related to the issue.