Thanks to everyone! I didn't mean to spam or advert myself, I already did it via classfields here. The article was written special for developer's blog and I just wanted to share it with the community. It pretty lacks on details, I should agree.
jbadams, I would try to edit the article. But I'm not an english-speaker. There could be mistakes
Anyway, you can delete the article. I don't want to begin my "journey" here with a shame. Sorry for that, some day I'll find some time to write a real good one.