title: Getting image URL from Contentful entry id
body: <p>I need to get an image URL from Contentful entry id.
  I am getting such an JSON from Contentful query</p>
  
  <pre><code>{
  "sys":{
    "space":{
       "sys":{
          "type":"Link",
          "linkType":"Space",
          "id":"8v1e7eaw70p2"
       }
    },
    "id":"1JfEwVlD9WmYikE8kS8iCA",
    "type":"Entry",
    "createdAt":"2018-02-28T18:50:08.758Z",
    "updatedAt":"2018-02-28T18:50:08.758Z",
    "revision":1,
    "contentType":{
       "sys":{
          "type":"Link",
          "linkType":"ContentType",
          "id":"image"
       }
    },
    "locale":"en-US"
  },
  "fields":{
    "name":"heat",
    "image":{
       "sys":{
          "type":"Link",
          "linkType":"Asset",
          "id":"6Inruq2U0M2kOYsSAu8Ywk"
       }
    }
  }
  }
  </code></pre>
  
  <p>I am using JS driver they provide:</p>
  
  <pre><code>client.getEntry()
  </code></pre>
  
  <p>so how to go thru that link: 6Inruq2U0M2kOYsSAu8Ywk ?</p>