Supply cargo --target based on npm --arch flag
Supply cargo --target based on npm --arch flag

Signed-off-by: Nathan Sobo <2e8aa918660411855c6d44d5bb2da677aa033255@github.com>

neon-bindings/neon-cli,rustbridge/neon,rustbridge/neon,neon-bindings/neon,dherman/nanny,neon-bindings/neon,dherman/neon-cli,rustbridge/neon,neon-bindings/neon-cli,rustbridge/neon,dherman/rust-bindings,dherman/nanny,dherman/neon-cli,neon-bindings/neon-cli,rustbridge/neon-cli,dherman/rust-bindings,dherman/nanny,rustbridge/neon,neon-bindings/neon,rustbridge/neon,neon-bindings/neon,dherman/nanny,dherman/neon-cli,rustbridge/neon-cli