Add common function to create a service.

service.go

@@ -1,7 +1,15 @@
 // Package service provides a simple way to create a system service.
-// Currently only supprts Windows.
+// Currently only supports Windows.
 package service
 
+// Creates a new service. name is the internal name
+// and should not contain spaces. Display name is the pretty print
+// name. The description is an arbitrary string used to describe the
+// service.
+func NewService(name, displayName, description string) Service {
+	return newService(name, displayName, description)
+}
+
 // Represents a generic way to interact with the system's service.
 type Service interface {
 	// Installs this service on the system.  May return an

service_windows.go

@@ -7,7 +7,7 @@ import (
 	"unsafe"
 )
 
-func NewService(name, displayName, description string) Service {
+func newService(name, displayName, description string) Service {
 	return &windowsService{
 		name:        name,
 		displayName: displayName,