Start work on bower.

@@ -286,6 +286,22 @@ module.exports = function (grunt) {
             }
         }
 
+        if (common.bower) {
+            externalMultiTask('bower', 'run bower externally', 'bower', function(target, options, configFile) {
+                return ['--config.directory=' + options.directory, target];
+            });
+            initConfig.bower = {
+                options: {
+                    directory: 'src/' + common.bower.directory,
+                },
+                install: {},
+                update: {},
+            };
+            if (common.useRev) {
+                initConfig.rev.dist.files.push({src: 'dist/' + common.bower.directory});
+            }
+        }
+
         buildList.push('useminPrepare');    // html
         //buildList.push('usemin:views'
         //buildList.push('requirejs');        // script