Update README.md

ZCLOUD-192
 - .zpk detection
Update README.md

Fixed typo
Merge pull request #11 from DanielBerman/master

Update README.md
Update README.md

Fixed typo
ZCLOUD-106 - remove patches to Zend Server that prevent it from joining a cluster
Merge pull request #12 from davidl-zend/master

Allow Zend Server to join cluster
ZCLOUD-167 - Add missing libssh2 libraries
Fix how server name is determined
Remove excessive output from json-env-extract.php
Fix typo in apache restart and remove code duplication
Remove unneeded code and output server-add-to-cluster command on debug