Adding problems to be solved.
Added tests to avoid regression problems
First tested that two sequencial bits were accepted for the same user, after changed it ASAP.
refactored to get easy to understand
changed other tests that were broken once the recent changes made in the business rules
added tests to the 5 maximun bids rule
implemented the easy and quick solution for pass tests of the 5 maximun bids rule
refactored to get an easy to understand solution, avoiding processing the count of previous bids when isn't necessary
added coments
Merge pull request #4 from helmedeiros/PracticingTestDrivenDevelopment

Practicing test driven development - First problem to be evaluated and implemented