title: react implict return in an onClick
body: <p>So I have been seeing this in the codebase recently. An implicit return from an <code>onClick</code></p>
  <pre><code>&lt;Button onClick={() =&gt; history.push('/urlTing') }&gt;
     Ting
  &lt;/Button&gt;
  </code></pre>
  <p>Is this a big no-no? Or is it better? Any input here would be appreciated. Both appear to provide the desired behavior.</p>
  <p>Obviously here is what it looks like without the implicit return.</p>
  <pre><code>&lt;Button onClick={() =&gt; {
     history.push('/urlTing'); 
  }}&gt;
     Ting
  &lt;/Button&gt;
  
  </code></pre>