title: alexa sending SessionEndedRequest on skill invocation
body: <p>I am developing an alexa skill,and testing it on alexa simulator provided by amazon, which will bring some news based on keyword which user provide upon request.</p>
  
  <p>I set a keyword say '<strong>bbc news</strong>'  as invocation.</p>
  
  <p>everything was working fine for <strong>last 2 days</strong>, now today suddenly the alexa simulator is sending <strong>TWO requests by itself</strong>.</p>
  
  <p>upon calling invocation '<strong>bbc news</strong>' the simulator send <strong>LaunchRequest</strong> to my server and then <strong>within 1 second</strong> it sends '<strong>SessionEndedRequest</strong>' to my server automatically.
  I don't know whats happening, I debug my php code but its working fine.</p>