Kill trailing whitespace in ruby files

app/logical/post_sets/popular.rb

@@ -1,41 +1,41 @@
 module PostSets
   class Popular < Base
     attr_reader :date, :scale
-    
+
     def initialize(date, scale)
       @date = date.blank? ? Time.zone.now : Time.zone.parse(date)
       @scale = scale
     end
-    
+
     def posts
       ::Post.where("created_at between ? and ?", min_date.beginning_of_day, max_date.end_of_day).order("score desc").limit(limit)
     end
-    
+
     def limit
       25
     end
-    
+
     def min_date
       case scale
       when "week"
         date.beginning_of_week
-        
+
       when "month"
         date.beginning_of_month
-        
+
       else
         date
       end
     end
-    
+
     def max_date
       case scale
       when "week"
         date.end_of_week
-        
+
       when "month"
         date.end_of_month
-        
+
       else
         date
       end