added example resource handler
added example resource handler

RIOT-OS/libcoap,fredericgermain/libcoap,markushx/libcoap,nmacs/libcoap,pabigot/libcoap,pabigot/libcoap,gebart/libcoap,fredericgermain/libcoap,markushx/libcoap,RIOT-OS/libcoap,PolymorhicCode/libcoap,thecodemaiden/libcoap-fork,alexaring/libcoap,alexaring/libcoap,nmacs/libcoap,joaopedrotaveira/libcoap,OlegHahm/libcoap,pabigot/libcoap,sgso/libcoap,sgso/libcoap,markushx/libcoap,gebart/libcoap,fredericgermain/libcoap,thecodemaiden/libcoap-fork,gebart/libcoap,OlegHahm/libcoap,joaopedrotaveira/libcoap,authmillenon/libcoap,authmillenon/libcoap,OlegHahm/libcoap,sgso/libcoap,joaopedrotaveira/libcoap,alexaring/libcoap,nmacs/libcoap,authmillenon/libcoap