Get a single key

curl "https://api.phrase.com/v2/projects/:project_id/keys/:id?branch=my-feature-branch" \
  -u USERNAME_OR_ACCESS_TOKEN

{
  "id": "abcd1234cdef1234abcd1234cdef1234",
  "name": "home.index.headline",
  "description": "My description for this key...",
  "name_hash": "1b31d2580ce324f246f66b3be00ed399",
  "plural": false,
  "tags": [
    "awesome-feature",
    "needs-proofreading"
  ],
  "data_type": "string",
  "created_at": "2015-01-28T09:52:53Z",
  "updated_at": "2015-01-28T09:52:53Z",
  "name_plural": "home.index.headlines",
  "comments_count": 2,
  "max_characters_allowed": 140,
  "screenshot_url": "http://assets.example.com/screenshot.png",
  "unformatted": false,
  "xml_space_preserve": false,
  "original_file": "",
  "format_value_type": "",
  "creator": {
    "id": "abcd1234cdef1234abcd1234cdef1234",
    "username": "joe.doe",
    "name": "Joe Doe"
  },
  "custom_metadata": {
    "fruit": "Apple",
    "vegetable": "Tomato"
  }
}