define locals within development

[timaschew]

https://github.com/component/spec/blob/master/component.json/specifications.md#development

What's about locals only for the dev env, like:

{
  "development": {
    "dependencies": {
      "component/assert": "*",
      "visionmedia/mocha": "*"
    },
    "locals": [
      "testutils"
    ],
    "scripts": [
      "test.js"
    ],
    "styles": [
      "test.css"
    ]
  }
}