Complete rewrite of S3

.Uses a server side collection to track progress and data
.No more block or event helpers, S3 is now a simple function
S3.upload(files,path,callback)
.The callback returns total_uploaded, uploading, percent_uploaded, url,
and secure_url for further processing
Updated basic example
Fixed README
Better delete function
Remove trash
Repair delete
Update examples and README
Update README
Update README
Update README
Update README
Update README
Update README
Merge branch 'progress_bar'