title: How to add and remove fields with redux-form
body: <p>I have a large form with the fields being drawn out dynamically, based on a schema. (i'm looping through a JSON schema to write my fields).</p>
  
  <p>Some of my fields are nested, so the naming convention follows a dot-notation;</p>
  
  <pre><code>ParentField.ChildField.Name
  </code></pre>
  
  <p>This will automatically nest the data as it's input;</p>
  
  <pre><code>ParentField {
    ChildField {
      Name: "Value of field"
    }
  }
  </code></pre>
  
  <p>redux-form provides a FieldArray that allows you to <code>push()</code> fields on demand, but this changes the format of the data to include arrays of info - <strong>not</strong> what i want!</p>
  
  <p>So i need to be able to register and unregister fields on demand (button click for example)</p>
  
  <p>The documents point to actionCreators but i can't figure out how to implement them.</p>