Update Readme.md

Author: AlanBarber

Readme.md

@@ -29,6 +29,7 @@ Then configure the SplunkHttpEventCollector with `ServerUrl` and `Token`:
             includeEventProperties="true"
             includeMdlc="false"
             includePositionalParameters="false"
+	    MaxConnectionsPerServer="10"
 	    IgnoreSslErrors="false">
 		<contextproperty name="host" layout="${machinename}" />
 		<contextproperty name="threadid" layout="${threadid}" />