title: Ruby: How to check if a string contains multiple items?
body: <p>I'm familiar with Ruby's <code>include?</code> method for strings, but how can I check a string for multiple things?</p>
  
  <p>Specifically, I need to check if a string contains "Fwd:" or "FW:" (and should be case insensitive)</p>
  
  <p>Example string would be: "FWD: Your Amazon.com Order Has Shipped"</p>