Include a sample beacon call when a page loads

This will let us count who is looking at what type of articles in real time.
would you mind moving this to the top of this file?

[ unlike node browserify won't allow you to conditionally load things—so there isn't a performance gain by putting it here—inline requires can result in circular dependencies sneaking into browserify code (speak to anyone from the web app about this :smile: ) and it's a nice convention to put all your module's dependencies at the top of the file (people do the same in php, c, java, many other languages) ]