Merge pull request #1 from ofertix/master

Correct Readme.md
Add a default ssh proxy on construct.
Detect if php-ssh is installed otherwise use CLISshProxy
Merge pull request #2 from ofertix/SSHManager

Ssh manager
zone servers parameters has been separated in other file and a syncronize command has been added
Merge pull request #3 from jordillonch/feature_sync

feature syncronize
fix sync method and add more debug info to log
fix output from localhostProxy