Pressing enter/return on a contenteditable div places this into the html

contenteditable.html

contenteditable

Pressing enter/return on a contenteditable div places this into the html
Fix: http://jakiestfu.github.io/Medium.js/docs/ or http://stackoverflow.com/questions/18552336/prevent-contenteditable-adding-div-on-enter-chrome

Firefox: <br>
Chrome: <div><br></div> (<div>With text</div>)
Safari: <div><br></div> (<div>With text</div>)
IE11: <p><br></p> (<p>With text</p>)
IE10: <p>&nbsp;</p> (<p>With text</p>)
IE9: <p>&nbsp;</p> (<p>With text</p>)

IE also places a <p> tag around the prior element if it does not have one. So
  <div>text</div>
becomes
  <div><p>text</p><p>More text</p></div>