Update README.md

Fixed typo
Merge pull request #11 from DanielBerman/master

Update README.md
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
Modify default apache vhost to listen on all available ports
Remove post_activate.php when using apache
Fix default server in UI to show correct URLs of applications
Fix hard coded path to zce.rc in zs-manage
Add ZCLOUD-194 patch that fixes server removal from cluster
Zend Server 7.0 upgrade
Disable temporary patches
Fix ZRay URI
Add ZEND_CLEAR_CACHE environment variable to allow clearing cache before
downloading tarballs.
Add uname output to debug mode
Replace wait page that is displayed while ZS is being bootstrapped
Temporary fix for Bluemix caching