Create banker.go (#81)
Create banker.go (#81)

* Create banker.go

* add macOS clear command to banker example

Co-authored-by: Simon Waldherr <46f1a0bd5592a2f9244ca321b129902a06b53e03@simon.waldherr.eu>
SimonWaldherr/golang-examples,SimonWaldherr/golang-examples,SimonWaldherr/golang-examples