fix(app): include client/*.html in usemin html glob

Author: kingcody

app/templates/Gruntfile.js

@@ -290,7 +290,7 @@ module.exports = function (grunt) {
 
     // Performs rewrites based on rev and the useminPrepare configuration
     usemin: {
-      html: ['<%%= yeoman.dist %>/client/!(bower_components){,*/}*.html'],
+      html: ['<%%= yeoman.dist %>/client/{,!(bower_components)/**/}*.html'],
       css: ['<%%= yeoman.dist %>/client/!(bower_components){,*/}*.css'],
       js: ['<%%= yeoman.dist %>/client/!(bower_components){,*/}*.js'],
       options: {