README.md in sensu-plugins-cgroups-1.0.0 vs README.md in sensu-plugins-cgroups-1.1.0

@@ -8,11 +8,57 @@
 
 ## Functionality
 
 ## Files
  * bin/metrics-cgroup.sh
+ * bin/metrics-cgroup.rb
 
 ## Usage
+
+Collect all cgroup metrics, tested only on CentOS.
+
+```
+metrics-cgroup.rb -g "/sys/fs/cgroup/**/**"
+```
+
+Collect only systemd service metrics
+
+```
+metrics-cgroup.rb -g "/sys/fs/cgroup/**/system.slice/*"
+```
+
+Collect only user.slice only
+
+```
+metrics-cgroup.rb -g "/sys/fs/cgroup/**/user.slice"
+```
+
+Collect only mesos task metrics
+
+```
+metrics-cgroup.rb -g "/sys/fs/cgroup/**/mesos/*"
+```
+
+Collect only docker container metrics (may not be meaningful if you already collect metrics from docker)
+
+```
+metrics-cgroup.rb -g "/sys/fs/cgroup/**/docker/*"
+```
+
+Collect only system.slice, user.slice, docker and mesos and nothing else
+
+```
+metrics-cgroup.rb -g "/sys/fs/cgroup/**/{system.slice,user.slice,docker,mesos}{,/*}"
+```
+
+Instead of collecting breakdown of each docker instance, or
+mesos task, or systemd service metric; this could let to
+collect/compare overall docker, mesos, systemd and user recources
+in total.
+
+```
+metrics-cgroup.rb -g "/sys/fs/cgroup/**/{system.slice,user.slice,docker,mesos}"
+```
 
 ## Installation
 
 [Installation and Setup](http://sensu-plugins.io/docs/installation_instructions.html)