https://medium.com/rocket-fuel/angular-schematics-simple-schematic-76be2aa72850
https://medium.com/rocket-fuel/angular-schematics-ngmomentum-552ad04f0d9d
https://blog.angular.io/angular-schematics-unit-testing-3a0a9aaab186
https://medium.com/@tomastrajan/total-guide-to-custom-angular-schematics-5c50cf90cdb4
https://blog.angular.io/schematics-an-introduction-dc1dfbc2a2b2
https://blog.angularindepth.com/effective-automated-scaffolding-with-angular-schematics-c61d6640b7d5