added NotFound vue

package.json

@@ -9,6 +9,8 @@
     "test:unit": "vue-cli-service test:unit"
   },
   "dependencies": {
+    "@vue/cli": "^3.4.1",
+    "bootstrap-vue": "^2.0.0-rc.13",
     "vue": "^2.6.6",
     "vue-class-component": "^6.0.0",
     "vue-property-decorator": "^7.0.0",

src/router.ts

@@ -1,6 +1,7 @@
 import Vue from 'vue';
 import Router from 'vue-router';
 import Home from './views/Home.vue';
+import NotFound from './views/NotFound.vue';
 
 Vue.use(Router);
 
@@ -21,5 +22,10 @@ export default new Router({
       // which is lazy-loaded when the route is visited.
       component: () => import(/* webpackChunkName: "about" */ './views/About.vue'),
     },
+    {
+      path: '*',
+      name: 'notFound',
+      component: NotFound,
+    }
   ],
 });

src/views/NotFound.vue

@@ -0,0 +1,5 @@
+<template>
+  <div>
+    <p>404 - Not Found</p>
+  </div>
+</template>