Updated readme

Author: NL\Jeroen.Stemerdink

EPi.Libraries.Logging.Serilog.AppSettings/readme.txt

@@ -2,8 +2,8 @@
 The settings were added to your appsettings:
 
 <add key="serilog:minimum-level" value="Error" />
-<add key="serilog:write-to:RollingFile.pathFormat" value="C:\Logs\myapp-{Date}.txt" />
-<add key="serilog:write-to:RollingFile.retainedFileCountLimit" value="10" />
+
+If you want to use e.g. a variable "basepath" in your pathformat,  you can add "Environment.SetEnvironmentVariable("BASEPATH", AppDomain.CurrentDomain.BaseDirectory);" to the Application_Start in the global.asax
 
 See https://github.com/serilog/serilog/wiki/AppSettings for all configuration options.