delete file
   identical  build/assets/img/speaker/hayase.JPG
    error  build/assets/js/sidr/README.html
  identical  build/index.html
    error  build/assets/js/sidr/component.json
  There were errors during this build, re-run with `middleman build --verbose` to see the full exception.
Merge pull request #5 from koudaiii/design

delete file