Document the quiet flag in the readme (#86)

JeremyCarlsten · sindresorhus · commit 3bfd4ea097e9 · 2016-11-04T00:10:30.000+07:00
diff --git a/readme.md b/readme.md
@@ -46,6 +46,8 @@ The `watch` task and tasks that take less than 1% of the total time are hidden t
 
 Run grunt with `grunt --verbose` to see all tasks.
 
+Run grunt with `grunt --quiet` to quiet all tasks including time-grunt.
+
 
 ## License
 
