Referencing a value inside a yaml file

Given the following input file: `in.yaml`
```
description:
    $ref: ./desc.yaml#/description
```
And the following referenced file: `desc.yaml`:
```
description: this is a value
```
When I merge the input file using `swagger-merger -i in.yaml -o out.yaml `

Then I receive the following error: `Unexpected token } in JSON at position 33`