Instructions for downloading and integrating portal-vue

1. download bootstrap-vue distribusion throuhg npm
   npm install portal-vue

2. Copy node_modules/portal-vue/dist/portal-vue.esm.js to amd/src/portal-vue

3. Change import statements on top of portal-vue.esm to:

   /* Modification to handle relative loading of vue */
   import Vue from '../vue/vue';
   /* End modification */
