Stand-alone version of the package

[famuvie]

Provide a downloadable compiled binary package that encapsulates R, Shiny, mapMCDA and its dependencies into a stand-alone executable program.

This is costly to produce and set-up. Especially for several platforms. But it would greatly improve the experience of users that are unfamiliar with R and need to install it only for the purpose of the package.

[famuvie]

I'm not sure I want to devote efforts to promote this kind of logic. But it would be certainly very much appreciated.

More importantly, this requires solving #29 first.