Merge pull request #111 from vkhatri/master

updated README and Changelog
use the use ssl agent attribute in opscenterd config
Merge pull request #112 from willejs/patch-1

use the use ssl agent attribute in opscenterd config
Fixing symlink creation for cassandra 2.1. In the medium term, one should alter the environment variable CASSANDRA_CONF.
Create parent directory for symlink if necessary. Throw exception if specified config dir already exists.
Merge pull request #113 from frankwis/master

Fixing symlink to config dir for C* 2.1
Bug fix: Too many levels of symbolic links.
Merge pull request #114 from frankwis/master

Bug fix: Too many levels of symbolic links.
Updating system.local with a desired cluster name has no effect until that change is flushed. I have added 'nodetool flush' after cqlsh command.
Merge pull request #115 from pkoz/master

Fixed cluster_name change when installed with ubuntu package
Made all Java includes conditional
Merge pull request #118 from ti-mo/master

Made all Java includes conditional