s3 to local fails when no slash in s3 arg

[ferrix]

ruby -I /usr/local/s3sync /usr/local/s3sync.rb -r foobucket:barprefix /restore/dir

This says "put the item foobucket:barprefix into the /restore/dir " folder.  So it tries to recursively fill /restore/dir/foobucket:barprefix which

• doesn't exist, and
• is silly

[ferrix]

Should be fixed now.