minor documentation issue, push only servers

[odradek71]

The documentation page describing push-only servers has a code example with
server.addExtension({ ... });

but I believe 'server' refers to the bayeux server here, where in the other documentation pages the variable 'server' refers to the http server.
var server = http.createServer()

just for clarity, might be helpful to use the same variable names as the other pages.

[odradek71]

also for the push-only server example code, I had to change message.ext to message.data.ext

      var password = message.data.ext && message.data.ext.password;
      if (password !== secret)

[odradek71]

also for the push-only server example code, I had to change message.ext to message.data.ext

var password = message.data.ext && message.data.ext.password;
if (password !== secret)

I dug a bit further and have to admit this was my misunderstanding of how the password should be added. When I was trying to add the password via the client.publish() arguments it was showing as a property under the message.data hierarchy. But now I've figured out the right way to add the secret is via child.addExtension(), and that way it can be added to message.ext