update README for packer
update README for packer

kivy/buildozer,kivy/buildozer,inclement/buildozer,rnixx/buildozer,inclement/buildozer,inclement/buildozer,rnixx/buildozer,rnixx/buildozer,inclement/buildozer,kivy/buildozer,rnixx/buildozer,kivy/buildozer