Add some vue magic to product components

not entirely clear what that does, but maybe important..?

src/components/products/index.js

@@ -1,6 +1,30 @@
 import ByjoveProducts from './ByjoveProducts'
 import ByjoveProduct from './ByjoveProduct'
 
+// Declare install function executed by Vue.use()
+export function install(Vue) {
+    if (install.installed) return;
+    install.installed = true;
+    Vue.component('ByjoveProducts', ByjoveProducts);
+    Vue.component('ByjoveProduct', ByjoveProduct);
+}
+
+// Create module definition for Vue.use()
+const plugin = {
+    install,
+};
+
+// Auto-install when vue is found (eg. in browser via <script> tag)
+let GlobalVue = null;
+if (typeof window !== 'undefined') {
+    GlobalVue = window.Vue;
+} else if (typeof global !== 'undefined') {
+    GlobalVue = global.Vue;
+}
+if (GlobalVue) {
+    GlobalVue.use(plugin);
+}
+
 export {
     ByjoveProducts,
     ByjoveProduct,