Update form-data to 1.0
Update form-data to 1.0

Fixes #899

focusaurus/superagent,craigspaeth/superagent,fredigato/superagent,visionmedia/superagent,visionmedia/superagent,fredigato/superagent,craigspaeth/superagent,focusaurus/superagent,visionmedia/superagent