Setup Ruby on Rails Environments

1. Homebrew:

    $ ruby -e "$(curl -fsSL https://raw.github.com/Homebrew/homebrew/go/install)”
    $ brew doctor
   

2. Ruby:

    $ brew install rbenv
    $ brew install ruby-build
    // Add eval "$(rbenv init -)" to .bash_profile
    $ source ~/.bash_profile
    $ rbenv rehash
    $ rbenv global 2.0.0-p481
   

3. RubyGems:

    $ gem update —system
   

4. Rails:

    $ gem install bundler
    $ rbenv rehash
    $ gem install rails --version 4.1.4
    $ rbenv rehash
   

5. MySQL:

    $ brew install mysql
    $ mysql.server start
    $ mysql -u root
    $ gem install mysql2