Token not optional during build

[anujdeshpande]

While building using balena-build.sh it prints that the token is an optional argument. But it fails if it doesn't find one in ~/.balena/token
Feels a bit misleading - maybe editing the help text to clearly state that we need a token - either as a param or in ~/.balena/ would make sense

balena-yocto-scripts/build/balena-build.sh

Line 18 in 67cb61f

-t Balena API token (optional - private apps access)