NLog/NLog — pull request #239 by mpareja (2013-07-09 17:13:36+00:00)
Title: Add layout renderer for retrieving values from AppSettings.

Referencing application configuration values is useful to prevent duplicating configuration between Web.config/App.config and NLog.config. This commit adds support for referencing application configuration values from AppSettings with support for specifying a default value in case one is not defined.