Rebuild on layout change

Author: dgoodlad

Guardfile

@@ -5,5 +5,6 @@ end
 
 guard :shell do
 #guard 'rake', :task => 'build:pages' do
+  watch(%r{^layout.html.haml$}) { `rake build:pages` }
   watch(%r{^pages/.+\.html\.haml}) { `rake build:pages` }
 end