title: SharePoint 2013 Property Bag CRUD using jQuery (REST API) and CSOM (ECMASCRIPT)
body: <p>for 2 days i'm going nuts with the property bag in SP 2013 using javascript and CSOM.
  I was following this post <a href="http://blogs.realdolmen.com/experts/2013/05/22/building-sharepoint-hosted-apps-reading-and-writing-to-property-bags/" rel="nofollow">example property bag</a> about writing and reading property bag keys in SP 2013 using CSOM ... and it works great! However can somebody tell how can <code>I delete/update a key ?</code> So in that example, how you can delete the key using CSOM?</p>
  
  <p>Another question: how can I achieve the same (CRUD) using the new REST API in SP 2013 using jQuery? I'm talking about calling the REST endpoint: <code>http://site_here/_api/web/AllProperties</code> ?</p>