Update BUILDING document to reflect that the gateway must now be built using ant (rather than calling mwc.pl and make directly)
Update BUILDING document to reflect that the gateway must now be built using ant (rather than calling mwc.pl and make directly)

isis-ammo/ammo-gateway,isis-ammo/ammo-gateway,isis-ammo/ammo-gateway,isis-ammo/ammo-gateway,isis-ammo/ammo-gateway,isis-ammo/ammo-gateway