See Yeoman.io
If you try to install yeoman on windows (via Git Bash), it says that windows is not supported. But don't worry, all you need to do is install yeoman and its dependencies manually.
Software to install:
You will need to add this software to your GIT BASH's $PATH so that yeoman can run it from the command-line.
IMPORTANT: ONLY RUN YEOMAN COMMANDS FROM THE GIT BASH COMMAND LINE! Never run yeoman from the windows cmd prompt. Yeoman will use unix style file paths. If you run from windows cmd, yeoman will put files in the wrong folders. You have been warned!
