Clarify where PNG and SVG application icons should be installed
Explicitly mention that PNG icon files must go to
$prefix/share/icons/hicolor/$size/$context
and SVG icon files must go
to $prefix/share/icons/hicolor/$size/$context
Resolves #31
Also use icon file
instead of icon
as icon file
is defined
previously in the spec
https://specifications.freedesktop.org/icon-theme-spec/latest/ar01s02.html
Edited by bbhtt