I wrote a simple script in node.js to manage filepicker.io's file.
You can find it here: Picchio
First of all you have to need to create an account into filepicker and after you have to add APIKEY into picchio config file or just pass it.
node picchio -a "APIKEY" -f "FILE1" -f "FILE2" -f "FILE3"
and after that you'll receive links to your files.
If you want delete it from filepicker.io you can do:
node picchio -a "APIKEY" -d "LINK1" -d "LINK2" -d "LINK3"
and so on...