Ensure all files end with a newline

Removed trailing whitespace

Renamed all "package.json" files to "dub.json"

Revert "With discoverable subpackages, the examples are named like their folder." ...

This reverts commit 440089b.

Automatic discovery is disabled.

With discoverable subpackages, the examples are named like their folder. ...

When it is allowed to name these differently, the package id would be rather strange for the normal usecase (e.g. a dependency on dub/examples/app/app would be required)

Add some basic example projects.