Lowered the maximum of token and messageId in agent by 1.
Lowered the maximum of token and messageId in agent by 1.

Before it was causing the messageId to become bigger than 2 bytes.

dmoranj/node-coap,OJFord/node-coap,mcollina/node-coap,cdvir1/node-coap,boneskull/node-coap,utopiaprince/node-coap