Add new features and BIG refactoring

[franzejr]

Hey everyone,

At the beginning of this project I didn't know it would grow up as it did. After some PRs from the entire world, I figured out it was hard to define what is a trick, what is not a trick and so on. Some PRs were refactoring techniques, or even 'idiomatic ruby code'. With this in mind and and some ideas, I decided to change this project a little bit. Now we have not only Tricks, but also idiomatic ruby techniques, refactoring approaches and Best Practices. I call this new phase of the project Best Ruby - www.best-ruby.com - For a better World with Ruby! ;-)

My changes on this PR are:

• Add Gitbooks
• Add Refactorings
• Add Best Practices
• Add Idiomatic Ruby
• Organize the project structure (I keep the ruby files for tricks and I think we can keep with this, there is an option for download the file).
• There is a branch for the book (gh-pages), I'm using github pages for it. Basically, I copy the _book folder for the gh-pages branch and it publishes directly on best-ruby.com. The creation of _book folder is using Gitbooks locally on my machine.

Probably, there is some typo on my Pull Request, it's a lot of changes!

I would like to say thank you for all contributors and persons who are watching this repository!

Let's keep moving and trying to build a better world with Ruby ;-)

[rafaelsales]

awesomeness

[franzejr]

:+1: if we have some typo or something like this, new PR can be submitted! I think it's too much changes to do a code review :P