improve readme
firsts modification to send and receive orders
Merge branch 'develop' of https://github.com/openjaf/cenit into develop

Conflicts:
	README.textile
comment requieremet to validates_presence_of sku in product
comment validation for sku in product
added p[:taxons] in def process
process taxons in consumer
change bunny gem version
Merge branch 'develop' of https://github.com/openjaf/cenit into develop

Conflicts:
	app/models/hub/product.rb
process options in consumer
improve consumer
process properties in consumer
improve product process
make shipping_category attribute mandatory,  then you can create and update products in cenit to send them to all endpoints
Merge branch 'develop' of https://github.com/openjaf/cenit into develop
change relation in favor to embeds_many over have_many
Merge branch 'develop' of https://github.com/openjaf/cenit into develop
create a product_producer to format a hash and send it to all endpoints, improve code in product_handler
include answer when create and update a product
prepare webhook controller to receive more than one object in the same request