Load plugin files only when needed

I have been looking for an accordion menu solution for a custom post type archive with a lot of terms, and really like the way your plugin functions, esp since I can choose to use a pre-existing menu OR generate one from a taxonomy/category

But, when testing out the plugin I saw that the menu’s css/javascript are loaded on every page of the site. Can the plugin be updated such that the included scripts are only loaded when the shortcode is present?

Also, although I like the included style, it would be nice if there was a minimal style option available that more respected the active theme… something like:

.wpb_category_n_menu_accordion ul li > a > span.wpb-submenu-indicator {
  float: right;
  font-weight: bolder;
  -o-transition: transform .3s linear;
  -moz-transition: transform .3s linear;
  -webkit-transition: transform .3s linear;
  -ms-transition: transform .3s linear;
}
.wpb_category_n_menu_accordion li.wpb-submenu-indicator-minus > a > span.wpb-submenu-indicator {
  -ms-transform: rotate(45deg);
  -moz-transform: rotate(45deg);
  -webkit-transform: rotate(45deg);
  transform: rotate(45deg);
}

/* Cat Count */

.wpb_category_n_menu_accordion ul li .wpb-wmca-cat-count:before {
  content:" (";
}
.wpb_category_n_menu_accordion ul li .wpb-wmca-cat-count:after {
  content:")";
}