title: Regex match everything up to first period
body: <p>Trying to get a lazy regex match of everything up until the first period of a sentence.</p>
  
  <p>e.g. Just want to get "jack and jill." from this sentence:<br>
  "jack and jill. went up the hill. to fetch a pail."</p>
  
  <p><code>/.+\./</code> matches the whole sentence (<a href="http://rubular.com/r/HuVqEBOm1M" rel="noreferrer">example</a>)<br>
  <code>/(.+?\.)/</code> matches each instance (<a href="http://rubular.com/r/yPGjgGgaK3" rel="noreferrer">example</a>)</p>
  
  <p>Is there a way to just match the first instance?</p>