Use a block instead of a proc param.
Use a block instead of a proc param.

Jesus/dropbox_api,Mavvie/dropbox_api,Mavvie/dropbox_api,Jesus/dropbox_api_v2,luigi-sk/dropbox_api,Mavvie/dropbox_api,Jesus/dropbox_api,Jesus/dropbox_api,luigi-sk/dropbox_api,Jesus/dropbox_api_v2