fix(gruntfile): Plugins bundled with release now

Grunt refactoring as part of the 0.7.0 release caused the plugins to
no longer be included in the tgz. This change makes sure plugins are
included by changing the globs to capture **/* instead of just *.

gruntfile.js

@@ -177,7 +177,7 @@ module.exports = function (grunt) {
       recent_to_release: {
         expand: true,
         cwd: 'dist/recent',
-        src: '*',
+        src: '**/*',
         dest: '<%= output_files.release %>'
       },
       uglify_to_final: {
@@ -346,7 +346,7 @@ module.exports = function (grunt) {
         },
         files: [
           {
-            src: '**',
+            src: '**/*',
             dest: '/',
             expand: true,
             filter: 'isFile',