Issue #46: can now use patterns for cluster name/id
Merge pull request #49 from Netflix/issues/46

Issue #46: can now use patterns for cluster name/id
Adding issue #46
Changed getDefaultInstance to getInstance so that the fast properties to change
login information can be used.
[Gradle Release Plugin] - pre tag commit:  '0.23'.
[Gradle Release Plugin] - new version commit:  '0.24-SNAPSHOT'.
Updating CHANGELOG for the 0.23 release
Merge branch 'master' into gh-pages
Updating javadocs for version 0.23