adding rails antipatterns review

napisal som recenziu na rails antipatterns http://www.amazon.com/Rails-AntiPatterns-Refactoring-Addison-Wesley-Professional/dp/0321604814. Cital som to davnejsie ale pri debate o mojom rieseni https://github.com/rubyslava/ruby-sentiments som si spomenul, ze jedno riesenie mam odtial. Imho celkom dobry read pre intermediate railsakov aj dnes...