title: Embed OSGI in war
body: <p>I am interested in adding an OSGI container into my WAR but I can't find a tutorial or a documentation on how to do this. I found some things that are not useful at all. 
  I am interested in Felix implementation and Atlassian implementation. </p>
  
  <p>I am willing to do this so that my war accepts plug-ins and I can dynamically extend my Web app and also deploy it to any Web server. </p>
  
  <p>Any links to a documentation or something? Any help is appreciated.</p>