add a sequelize database handler
force all response to be application/json
add Handler model

Conflicts:
	package.json
add a POST / view that creates new handlers
add Handler test cases
add POST / test cases
add a GET /:id view that describe en existing handler
add GET /:id test cases
add Callback model

Conflicts:
	package.json

Conflicts:
	package.json
add * /:id/listener view that store all incoming request details
add * /:id/listener test cases
add a server.js file that launches an application instance
add models parseHstore
set Callback.index to start from 0
fix the responses that were not properly sent
add Callback.toJSON()
move Handler links to a dedicated json attribute
add Callback.toJSON() test cases
add GET /:id/callbacks/ view that list callbacks for given handler id

Conflicts:
	package.json
add GET /:id/callbacks/ test cases