work on related tag js

app/controllers/related_tags_controller.rb

@@ -0,0 +1,12 @@
+class RelatedTagsController < ApplicationController
+  respond_to :json
+  
+  def show
+    @query = RelatedTagQuery.new(params[:query], params[:category])
+    respond_with(@query) do |format|
+      format.json do
+        render :json => @query.to_json
+      end
+    end
+  end
+end