FEATURE: appsecret_proof arugment

[mcsweena]

Can an additional parameter be added to this code so that an appsecret_proof argument can be supplied when uploading data?

All my API calls are failing due to the Require App Secret toggle being turned on in Facebook developer. This is the error message I receive:

{"error":{"message":"API calls from the server require an appsecret_proof argument","type":"GraphMethodException","code":100,"fbtrace_id":"<>"}}

When I tested the upload with this toggle turned off, it worked smoothly.