Add missing copyright notice.

Change-Id: If76a48cba01f34a2e5a78905d94a86538de1c81a
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>
Improve the documentation for the Module item.

Everything we showed there was how to add dependencies, which is more
relevant for the Depends item and has consequently been moved there.
Instead, we now show a complete module and how it interacts with a
product that has a dependency on it.

Change-Id: I4858e47c1d4c8c9861f40089c572c13e3b0ae83b
Reviewed-by: Jake Petroules <jake.petroules@petroules.com>