Add the second acceptance test (Should_publish_price_for_every_registered_pasta) and start to modify the MarketDataProvider that will now be driven by the PastaPricer (and infered by the registered pasta).
Implement and refactor stuffs to fix the first acceptance test + to prepare to "green-ification" of the  second acceptance test.

Introduce the PastaParser (for pasta configuration) and PastaPricingAgent types.
Change the cinematic of the registration for market data.