Either icon-gen or local scaling of images was producing a corrupted and
glitchy .icns file. With this module, we need only provide a 1024px
image and it handles the scaling and generation of all other icon
assets.
// FREEBIE
Move these to where the build expects them to be.
In theory electron-builder should generate these from a build/icon.icns
but that doesn't seem to be working.
// FREEBIE