add new thumbnail
add new thumbnail

Esri/offline-editor-js,andygup/offline-editor-js,Esri/offline-editor-js,EnzeZY/offline-editor-js,andygup/offline-editor-js,Esri/offline-editor-js,EnzeZY/offline-editor-js,EnzeZY/offline-editor-js,andygup/offline-editor-js