use chokidar correctly (fixes #450)
use chokidar correctly (fixes #450)

kevinschaul/nunjucks,atorkhov/nunjucks,pardo/nunjucks,internalfx/nunjucks,robgraeber/nunjucks,oddbird/nunjucks,mozilla/nunjucks,devoidfury/nunjucks,oddbird/nunjucks,robgraeber/nunjucks,internalfx/nunjucks,pardo/nunjucks,atorkhov/nunjucks,pardo/nunjucks,kevinschaul/nunjucks,pardo/nunjucks,devoidfury/nunjucks,kevinschaul/nunjucks,robgraeber/nunjucks,internalfx/nunjucks,oddbird/nunjucks,mozilla/nunjucks,internalfx/nunjucks,atorkhov/nunjucks,oddbird/nunjucks,mozilla/nunjucks,kevinschaul/nunjucks,atorkhov/nunjucks,robgraeber/nunjucks,devoidfury/nunjucks