title: Active Model Serializers 0.10 exclude namespaces with JSON adapter?
body: <p>Is there some way to exclude the namespace part of the model name in the root key?</p>
  
  <p>I used Active Model Serializer version 0.9 before and my JSON representation of a <code>User</code> at localhost:3000/api/v1/users/1 was something like:</p>
  
  <pre><code>{ "user": { "id": 1, "first_name": "Foo", "last_name": "Bar" } }
  </code></pre>
  
  <p>I recently upgraded to version 0.10 and now I get the namespace included in the root key:</p>
  
  <pre><code>{ "api/v1/user": { "id": 1,"first_name": "Foo", "last_name": "Bar" } }
  </code></pre>
  
  <p>I want the root key to be like before, that is "user" instead of "api/v1/user".</p>
  
  <h2>Edit 1</h2>
  
  <p>I am using the <code>:json</code> adapter.</p>
  
  <h2>Edit 2</h2>
  
  <p>I opened an <a href="https://github.com/rails-api/active_model_serializers/issues/1756" rel="nofollow">issue</a> at the repository on GitHub. Let's see what they say about it.</p>
  
  <h2>Edit 3</h2>
  
  <p>The <a href="https://github.com/rails-api/active_model_serializers/blob/master/docs/general/adapters.md#json" rel="nofollow">documentation</a> for Active Model Serializers have been updated. It explains how to override the root key.</p>