Add Yt to any bundled Ruby project by adding the line
gem 'yt', '~> 0.29.1' to its Gemfile.
You can also install Yt in your system by opening the Terminal and typing
gem install yt.
If you need to update version, type
gem update yt, or run
bundle update if inside a Ruby project.
Once Yt is installed, you can open the Terminal and type:
This will print out the version number and the annotation fetched from this YouTube video.
If you see the following message, congratulations! You are ready to start the tutorial.