Re: embedded-expiration/timeout issue?

  finally, here is the embedding code on github.  The `getEmbedTokens` method makes it look as though maybe we’re reusing tokens--we thought about that as an option at one point, but we don’t save tokens across requests, so in reality the way it works out is that a new token is generated for each request.  We should probably pull that out for the sake of clarity.  You'll most likely want to look at the `includes/powerbi.inc` file