RE: What is Cordova plugman?
Cordova Plugman is a command line tool to install and uninstall plugins for use with Apache Cordova projects.
To install plugman, you must have node installed on your machine. Then you can run the following command from anywhere in your environment to install plugman globally, so that it is available from any directory:
$ npm install -g plugman
plugman install --platform <ios|android> --project <directory> --plugin cordova-plugin-geolocation