Based on generator-angular
This is not published on NPM registry, so you need to clone the repo to a desired directory git clone https://github.com/abhidilliwal/generator-myangular.git:
git clone https://github.com/abhidilliwal/generator-myangular.git
now inside the checked out directory do npm-install, with -g the generator will be available globally:
npm install -g
Run yo angular, optionally passing an app name:
yo myangular [app-name]
Listing only the modified and new generators for the pre-existing generators refer: generator-angular