Instructions for downloading and integrating vue-easy-dnd

(Unfortunately we cannot use the latest version, since that requires vue3 support, and bootstrap-vue isn't there yet...)

1. download vue-easy-dnd distribusion throuhg npm 
   npm install vue-easy-dnd@1.22.0

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

3. Change import statements to
   import './reflect-metadata';
   import { Vue, Component, Prop } from './vue-property-decorator';

4. add /* eslint-disable */ to top of file