Merge pull request #16 from bcook-r7/land-6976-msftidy

tell the user what to do

Author: wvu

tools/dev/msftidy.rb

@@ -423,7 +423,7 @@ def check_ranking
         error("Invalid ranking. You have '#{$1}'")
       end
     else
-      info('No Rank specified. The default is NormalRanking.')
+      info('No Rank specified. The default is NormalRanking. Please add an explicit Rank value.')
     end
   end