Samples need some more love #215

As the repository is growing I believe we need to take some care about how we structure and present the samples. I was thinking about following improvements:

• Each concrete sample should have README file so when people browse the repository they should know what is the goal of a given module and what technologies (including testing) were used.
• My**Impl is not really the most appealing strategy for the samples. Therefore I think we could either decide on the common model (eg. Beers ;)) or we leave it up to the sample creator, but with emphasis on giving something real instead of yet another My**Impl