wpa-supplicant config for the Vrije Universiteit Amsterdam (VU)
You can reference the config in your /etc/network/interfaces.
For example:
auto wlan0
iface wlan0 inet dhcp
wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf
The same configuration should work for eduroam, as well (but I have not tested this fully).