Add carrierwave gem
Add fog gem
rails g uploader File
Set up uploader
Set up carrier_wave
Add mini_magick gem
Rename config file
Do not sanitize japanese word
Set up uploader
Use carrierwave
Set up japanese
Set japanese and change redirect path
Fix root_side
Change AWS_BUCKET to AWS_S3_BUCKET
Fix file_path bug
Remove s3_file_field
Update posts