keep compatibility with previous versions for now

lib/kaminari/helpers/paginator.rb

@@ -23,6 +23,8 @@ module Kaminari
         @template, @options = template, options
         @theme = @options[:theme] ? "#{@options[:theme]}/" : ''
         @options[:current_page] = PageProxy.new @window_options.merge(@options), @options[:current_page], nil
+        #FIXME for compatibility. remove num_pages at some time in the future
+        @options[:num_pages] = @options[:total_pages]
         # initialize the output_buffer for Context
         @output_buffer = ActionView::OutputBuffer.new
       end

lib/kaminari/models/page_scope_methods.rb

@@ -18,6 +18,8 @@ module Kaminari
     def total_pages
       (total_count.to_f / limit_value).ceil
     end
+    #FIXME for compatibility. remove num_pages at some time in the future
+    alias num_pages total_pages
 
     # Current page number
     def current_page