Allow to calculate progress of deployment:
- FtpDeployer is no singleton anymore
- "toTransfer" is attached to FtpDeployer instance now so it can be accessed externally
- added public property "total" containing total number files to transfer
- added public property "transfered" containing number of files already transfered
updated README example to work without the old singleton
Merge branch 'master' of https://github.com/der-On/ftp-deploy
Readme code is JS