Documentation shows package object extending js.GlobalScope without @js.native

[mseddon]

Found by @bblfish here:

scala-js/scala-js-dom#177 (comment)

On this page:

http://www.scala-js.org/doc/interoperability/facade-types.html

There is a snippet of the documentation which shows a package object extending js.GlobalScope, but these will not compile because it lacks @js.native annotations.

[bblfish]

It will compile actually if the -Xfatal-warnings is not set. But in any case it seems to be deprecated, so that the example in the documenation should remove the package object example, and explain instead the preferred method explained by sjrd in issue 177