IT Knowledge Sharing: Rails Installation

download and install ruby
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    rubyinstaller-2.1.6-x64
    (check all options)

test ruby version
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    ruby -v
        ruby 2.1.6p336 (2015-04-13 revision 50298) [x64-mingw32]

to install DevKit
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    download it, run it to extract it somewhere (permanent).
    then cd to it, run ruby dk.rb init and ruby dk.rb install
    to bind it to ruby installations in your path
        extract to C:\DevKit
        edit C:\DevKit\config.yml
        and add ruby path - C:/Ruby21-x64

install rails
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    gem install rails

test rails version
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    rails -v
        Rails 4.2.1

make a rubyonrails project
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    rails new path/to/your/new/application

run rubyonrails
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    cd path/to/your/new/application
    rails server

    http://localhost:3000

to install missing gems
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    bundle install

to see where a bundled gem is installed
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    bundle show sqlite3