Index: Gruntfile.js
===================================================================
--- Gruntfile.js	(revision 28188)
+++ Gruntfile.js	(working copy)
@@ -237,7 +237,10 @@
 					eqeqeq: false
 				},
 				// Limit JSHint's run to a single specified file
+				// Optionally also including the file path
+				//
 				//     grunt jshint:core --file=filename.js
+				//	   grunt jshint:core --file=path/to/filename.js
 				filter: function( filepath ) {
 					var index, file = grunt.option( 'file' );