New AMQP resource productor which creates and deliver cement
Update README.md

Add Merchant API to the documentation.
Update README.md

Fix the source code representation.
Merge pull request #1 from frsela/cementServer

New AMQP resource productor which creates and deliver cement
Update README.md

Add examples for the Central Server API
Update README.md

Add Central Server API Merchant-related method's documentation.
ADD pm2 to easy launch
Merge pull request #5 from jmendiara/master

ADD pm2 to easy launch