Initial plugin prototype.

Still needs some tunning. A major notable limitation
is that the ExternalInterface.addCallback method from
flash doesn not seem to have any effect on the JavaScript side.
Hence the current polling implementation
Compiled swf file against cf89ee79fdddcf90a06cae214b396e2571180353.
Fixing REAME typo.
Handling server disconnected event.

Updated compiled swf file.