title: Detect German Umlaut in Ruby
body: <p>Let's say I have multiple strings. Those strings could contain german umlauts like ö,ä,ü,Ü,ß...</p>
  
  <p>Id like to check if my strings have umlauts in them, e.g:</p>
  
  <pre><code>has_umlaut(string) # should return true or false
  
  "BG Göttingen" -&gt; true
  "BV Chemnitz 99" -&gt; false
  "Giants Düsseldorf" -&gt; true
  "Klöß" -&gt; true
  </code></pre>
  
  <p>Hope somebody can help me out!</p>