Build documentation incorrect

[BenjaminPelletier]

Since c0db11b, the instructions in the README to npm run build do not work (Error: ENOENT: no such file or directory, open 'out/Common.min.js') because the out folder does not exist. The documentation should be updated to include an instruction to create the out directory before attempting to npm run build.

Since a600a87, the instructions in the README to npm run build don't work at all because package.json is not in the original location. The README should be updated to indicate how Common.js can be built with npm after these changes.

As of ce4d69a, When the "Bundler & Minifier" extension is installed for Visual Studio Community 2019 and zzz_onload.js is trivially changed and saved, Common.min.js is written to /out, but it is not minified.

[catware2]

To minify when developing in Visual Studio, the "minify"->"enabled" in the bundleconfig.json needs to be set to "true". I have changed that now and committed it to the repo so it is the default. It was set to 'false' because it is necessary for debugging to not have the file minified (else it is quite difficult to step through code).

The other two questions relate to developing in Linux(?) which I don't have, so I'm not able to shed insight on how to fix them. It seems it's just an update to the documentation.

Regarding moving the 'out' folder location, I did that because Visual Studio automatically includes all files within the source code directory tree when developing in Javascript, and there's no way to exclude them. As the minified file in the 'out' directory should not be part of the repo, I moved the 'out' directory out of the source directory tree.