Generate documentation for objects nested in arrays

Add documentation for objects nested in arrays

```JSON
  {
    "total": null,
    "result": [
      {
        "entity": {
          "entityType": "type",
          "id": "id",
          "title": "title",
          "description": "bla bla"
        },
        "values": {
          "volume": null,
          "impressions": null
        }
      }
    ]
  }
```


Currently looks like:
![](http://monosnap.com/image/9r5DlrBLzzBPowKvpkOhpLlu8ouWxY.png)

Will change into:
![](http://monosnap.com/image/CDFYKLcPuNkITR9QaV9HqkJRJj5Uiv.png)


Example JSON Schema attributes
```JSON
  "properties": {
    "total": {
      "id": "http://jsonschema.net/total#",
      "type": "integer",
      "required": false
    },
    "result": {
      "id": "http://jsonschema.net/result#",
      "type": "array",
      "required": false,
      "items": {
        "id": "http://jsonschema.net/result/0#",
        "type": "object",
        "required": false,
        "properties": {
          "entity": {
            "id": "http://jsonschema.net/result/0/entity#",
            "type": "object",
            "required": false,
            "properties": {
              "entityType": {
                "id": "http://jsonschema.net/result/0/entity/entityType#",
                "type": "string",
                "description": "description",
                "example": "type",
                "required": false
              },
              "id": {
                "id": "http://jsonschema.net/result/0/entity/id#",
                "type": "string",
                "description": "description",
                "example": "id",
                "required": false
              },
              "title": {
                "id": "http://jsonschema.net/result/0/entity/title#",
                "type": "string",
                "description": "description",
                "example": "title",
                "required": false
              },
              "description": {
                "id": "http://jsonschema.net/result/0/entity/description#",
                "type": "string",
                "description": "description",
                "example": "bla bla",
                "required": false
              }
            }
          },
          "values": {
            "id": "http://jsonschema.net/result/0/values#",
            "type": "object",
            "required": false,
            "properties": {
              "volume": {
                "id": "http://jsonschema.net/result/0/values/volume#",
                "type": "integer",
                "required": false
              },
              "impressions": {
                "id": "http://jsonschema.net/result/0/values/impressions#",
                "type": "integer",
                "required": false
              }
            }
          }
        }
      }

    }
  },
  "type": [
    "object"
  ],
```