Show slideshow while installing files
* README: Add note about slideshow * src/inst-final.nsi: Stop slideshow. * src/inst-gpg4win.nsi: Start slideshow. * src/installer.nsi: Hide Show Details button. * src/Makefile.am: Add slideshow.cpp to g4wihelp. * src/slideshow/01.png: Placeholder image (logo). * src/slideshow/slides.data: Placeholder file.
The plan is to show some hints e.g. that you can now use
the file explorer for encryption or GpgOL for Mailencryption
and that the Installed Applications are available not as Gpg4win
but under the names "Kleopatra" or "GPA".