title: How can I store the selected semantic UI dropdown option in state?
body: <p>I have a dropdown list with 5 options. I need to save the selected option to my state as <code>listValue</code>.</p>
  
  <h3>My list of options and the state</h3>
  
  <pre><code>const options = [
    { key: 1, text: 'OK', value: 1 },
    { key: 2, text: 'Avvikelse', value: 2 },
    { key: 3, text: 'Ej Relevant', value: 3 },
    { key: 4, text: 'Observation', value: 4 },
    { key: 5, text: 'Saknas', value: 5 },
  ]
  export default class ConfirmationModal extends React.Component {
    state = {
    listValue: 'Status'
  }
  </code></pre>
  
  <h3>My list (from semantic-ui)</h3>
  
  <pre><code>dropDownList = () =&gt; (
    &lt;Dropdown
      placeholder={this.state.listValue}
      clearable
      options={options}
      selection
    /&gt;
  )
  </code></pre>
  
  <p>How can I store the selected option in my state?</p>