title: BeautifulSoup' has no attribute 'HTML_ENTITIES
body: <p>I have recently upgrade BeautifulSoup from version 3.0 to version 4.1 on a Windows machine.</p>
  
  <p>I am now getting a strange error:</p>
  
  <pre><code>File "C:\path\to\myscript.py", line 23
  0, in soupify
      return BeautifulSoup(html, convertEntities=BeautifulSoup.HTML_ENTITIES)
  AttributeError: type object 'BeautifulSoup' has no attribute 'HTML_ENTITIES'
  </code></pre>
  
  <p>Here is the snippet of code that causes the exception to be thrown:</p>
  
  <pre><code>def soupify(html):
      return BeautifulSoup(html, convertEntities=BeautifulSoup.HTML_ENTITIES)
  </code></pre>
  
  <p>The doc for BS does not mention how the constructor signature has changed fro v3 to v4. How may I fix this?</p>