update travis to publish docs on successful master build
update travis to publish docs on successful master build

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