/etc/network/interfaces.client-mode

auto lo
iface lo inet loopback

auto eth0
allow-hotplug eth0
iface eth0 inet manual

auto wlan0
allow-hotplug wlan0
iface wlan0 inet dhcp
        wpa-conf /etc/wpa_supplicant/home.conf
        up /etc/init.d/hostapd stop
        up /etc/init.d/dnsmasq stop