To install

1. Download ruby and dev kit from http://rubyinstaller.org/downloads/
2. Install both of them. When install ruby, it is better to check the option to add the path. Install the kit to, for example, c:\DevKit
3. Open cmd, and cd to c:\DevKit

4. Run

    > ruby dk.rb init
    > ruby dk.rb install
    > gem install jekyll
   

5. To turn on jekyll, enter

    > jekyll serve --watch --baseurl ""
   

Already installed

1. Open cmd, and cd to c:\DevKit

2. Run

    > ruby dk.rb init
   

3. Go to the local website folder and run

    > jekyll serve --watch --baseurl ""