Add ability to set the min log level in configuration

Author: ejsmith

src/Exceptionless/Configuration/ExceptionlessConfiguration.cs

@@ -178,6 +178,15 @@ public TimeSpan? UpdateSettingsWhenIdleInterval {
             }
         }
 
+        /// <summary>
+        /// Set the default minimum log level that will be used until settings are loaded from the server.
+        /// </summary>
+        /// <param name="minLogLevel"></param>
+        public void SetDefaultMinLogLevel(LogLevel minLogLevel) {
+            if (!Settings.ContainsKey("@@log:*"))
+                Settings.Add("@@log:*", minLogLevel.ToString());
+        }
+
         /// <summary>
         /// Gets or sets a value indicating whether to include private information about the local machine.
         /// </summary>

src/Platforms/Exceptionless.NLog/readme.txt

@@ -19,7 +19,10 @@ and viewing your project configuration page.
 -------------------------------------
 
 Here is an example NLog.config file that shows how to use the Exceptionless NLog target. The apiKey attribute
-is optional and will be picked up from your Exceptionless config section by default.
+is optional and will be picked up from your Exceptionless config section by default. It is recommended to set
+the minLevel on the Exceptionless target to Trace so that you can control log levels in the server side
+client configuration settings. Also, you can call Configuration.SetDefaultMinLogLevel to control the default
+minimum log level that will be used until the client retrieves settings from the server.
 
 <nlog>
   <extensions>
@@ -36,7 +39,7 @@ is optional and will be picked up from your Exceptionless config section by defa
   </targets>
 
   <rules>
-    <logger name="*" minlevel="Info" writeTo="exceptionless" />
+    <logger name="*" minlevel="Trace" writeTo="exceptionless" />
   </rules>
 </nlog>