Update Guardfile for better automatic testing

Author: garethr

Guardfile

@@ -1,5 +1,17 @@
 notification :off
 
-guard 'rake', :task => 'test' do
-  watch(%r{^manifests\/.+\.pp$})
+scope group: :spec
+
+group :spec do
+  guard :rake, :task => 'test' do
+    watch(%r{^lib\/.+\.rb$})
+    watch(%r{^spec\/.+\.rb$})
+		watch(%r{^manifests\/.+\.pp$})
+  end
+end
+
+group :acceptance do
+  guard :rake, :task => 'acceptance' do
+    watch(%r{^spec\/acceptance\/.+\.rb$})
+  end
 end