How to download and setup yui
Open terminal and run command
git clone https://github.com/RitterHou/yui.git
git clone is used to create a copy or clone of yui repositories.
You pass git clone a repository URL. it supports a few different network protocols and corresponding URL formats.
Also you may download zip file with yui https://github.com/RitterHou/yui/archive/master.zip
Or simply clone yui with SSH
[email protected]:RitterHou/yui.git