Before you can use bubik you first need to have installed Ruby, and then some gems. Gems are libraries for Ruby with a distribution and update command line tools.
On linux systems mysql-devel package needs to be installed using apt-get or yum or whatever distribution specific mechanism.
On Windows machines file mysqllib.dll has to be present in %PATH%. You might need to download it from MySQL website and copy to your RUBY_DIR/bin (e.g. C:\Ruby193\bin). Additionally it might happen that selenium-webdriver gem will need DevelopmentKit to be installed before. In order do to it please:
If you find issues with Development Kit when running these commands you might want to refer to more documentation here: https://github.com/oneclick/rubyinstaller/wiki/development-kit
# windows specific
cd C:\DevKit
devkitvars.bat
# unix specific
sudo yum install mysql-devel
# common to all systems
gem install selenium-webdriver
gem install inifile --version "0.4.1"
gem install sequel
gem install mysql
gem install sys-uname
gem install rails
gem install magic_encoding
gem install i18n