title: Json underscore or camelCase?
body: <p>I've a question about the syntax of this json:</p>
  
  <pre><code>{
  "trace_system": [
      {
        "id": 1,
        "name": "Test"
      },
      {
        "id": 2,
        "name": "Test2"
      }
    ]
  }
  </code></pre>
  
  <p>is better put an underscore delimiter so: <code>trace_system</code> or using the camel case: <code>traceSystem</code>? What you suggest and why?</p>