Support ./...

[Antonboom]

Hello!

$ godox ./...             
panic: stat godox: no such file or directory

goroutine 1 [running]:
main.main()
        /.../gows/pkg/mod/github.com/766b/godox@v0.0.0-20180305221205-0a7d8c138ed1/main.go:131 +0x1f0