Sails uses skipper to upload the files
HOW TO USE THIS CODE
git clone https://github.com/maangalabs/uploading-file-in-sails.git
cd uploading-file-in-sails
sudo npm install
sails lift
Go to http://localhost:1337/upload-file . You will find a button to add your file
For more check ..
Maangalabs Tutorial : http://maangalabs.com/blog/2014/08/12/uploading-a-file-in-sails/