delete old files
add Widget resource

For testing and developing the base template app, this commit adds a Widget model, WidgetsController, and a couple specs to test the WidgetSerializer.
Update README.md
Merge branch 'master' of github.com:Sidebench-Studios/a16z-search-portal-v2

# By Marc Cantwell
# Via Marc Cantwell
* 'master' of github.com:Sidebench-Studios/a16z-search-portal-v2:
  Update README.md