readme: Do not note removal of configs in master

If they are harmless, they will be in master
Revert "Remove Linux-specific configurations from master"

This reverts commit 8444dfed1dc60e853d8169f3648ec9d1f5fbe818.

Conflicts:
	README.md
Revert "Remove hushlogin/mpd configs from master"

This reverts commit 51d9df0f79ef238bb63476772dc3319d9354d64e.

Conflicts:
	README.md