Updated coap gem.
Updated coap gem.

nning/david,nning/david,EmuxEvans/david,nning/david,EmuxEvans/david,Miradorn/david,EmuxEvans/david,Miradorn/david,nning/david,nning/david,Miradorn/david,EmuxEvans/david,Miradorn/david,Miradorn/david,EmuxEvans/david