Merge pull request #598 from max-power/patch-1

update collection namespace to show database first

Author: estolfo

lib/mongo/collection.rb

@@ -215,7 +215,7 @@ def bulk_write(operations, options)
     #
     # @since 2.0.0
     def namespace
-      "#{name}.#{database.name}"
+      "#{database.name}.#{name}"
     end
   end
 end