(puppetlabs#1) Add example test using relationships.

This example test illustrates how the end user of the module is expected
to consume the module.  Two relationships are present, the notify
resources should always be evaluated in the correct and specified order.

tests/init.pp

@@ -1,5 +1,11 @@
 node default {
 
-  class { "ntp": }
+  notify { 'enduser-before': }
+  notify { 'enduser-after': }
+
+  class { 'ntp':
+    require => Notify['enduser-before'],
+    before  => Notify['enduser-after'],
+  }
 
 }