example format of the groups in the master config

conf/master

@@ -168,3 +168,24 @@
 #   }
 #
 #log_granular_levels: {}
+
+
+#####         Node Groups           #####
+##########################################
+# Node groups allow for logical groupings of minion nodes.
+# A group consists of a target evalation form(ie; list, glob, grain)
+# and the value of that form. Currently a group can only consist
+# of one target eval form and the value for that form. 
+# 
+# nodegroups: {
+#   group1: {
+#     list: [
+#       'foo.domain.com',
+#       'bar.domain.com',
+#       'baz.domain.com',
+#       ]
+#   },
+#   group2: {
+#     glob: 'ba*.domain.com',
+#   },
+# }