Update documentation.

README.md

@@ -648,6 +648,8 @@ class { 'collectd::plugin::postgresql':
 
 ####Class: `collectd::plugin::processes`
 
+You can either specify processes / process matches at once:
+
 ```puppet
 class { 'collectd::plugin::processes':
   processes => ['process1', 'process2'],
@@ -657,6 +659,17 @@ class { 'collectd::plugin::processes':
 }
 ```
 
+Or define single processes / process matches:
+```puppet
+collectd::plugin::processes::process { 'collectd' : }
+```
+
+```puppet
+collectd::plugin::processes::processmatch { 'elasticsearch' :
+  regex => '.*java.*org.elasticsearch.bootstrap.Elasticsearch'
+}
+```
+
 ####Class: `collectd::plugin::python`
 
  * `modulepaths` is an array of paths where will be Collectd looking for Python modules, Puppet will ensure that each of specified directories exists and it is owned by `root` (and `chmod 0750`). If you don't specify any `modulepaths` a default value for given distribution will be used.