Show contributors for specified files.
$ go get github.com/naoty/git-contrib
$ git contrib main.go
Naoto Kaneko
$ git contrib main.go hello.go
Naoto Kaneko
-n option helps to specify the number of contributors.
$ git contrib -n 3 main.go hello.go
Nobunaga Oda
Hideyoshi Toyotomi
Ieyasu Tokugawa