func IncrGoroutines(n int) boutique.Action {
	return boutique.Action{Type: ActIncr, Update: n}
}
/////////////////////////////////////////////////////////////////////////////
These are our Action creators.  They create an Action to update the Store
and are always used with a boutique.Store.Perform() call.
/////////////////////////////////////////////////////////////////////////////
IncrGoroutines creates an ActIncr boutique.Action.
package main
import (
	"fmt"
	"math/rand"
	"sync"
	"time"
	"github.com/johnsiilver/boutique"
)
type State struct {
	Goroutines int
}
const (
	ActIncr boutique.ActionType = iota
	ActDecr
)