TWEAK: Add GOPATH/bin to 'make protos'.
TWEAK: Add GOPATH/bin to 'make protos'.

OpenBazaar/openbazaar-go,OpenBazaar/openbazaar-go,gubatron/openbazaar-go,hoffmabc/openbazaar-go,hoffmabc/openbazaar-go,hoffmabc/openbazaar-go,gubatron/openbazaar-go,OpenBazaar/openbazaar-go,gubatron/openbazaar-go