Added configuration example for external server
Added configuration example for external server

Just added an example of how to configure an external smtp server for newbie users which don't know where to set it up.
lyrixx/Silex,mmauri04/Silex,cesarmarinhorj/Silex,cesarmarinhorj/Silex,JPry/Silex,lokhman/Silex,Tobion/Silex,lyrixx/Silex,cgsmith/Silex,mathroc/Silex,arduanov/Silex,JPry/Silex,jdreesen/Silex,lokhman/Silex,fabpot/Silex,plotek/Silex,fhinkel/Silex,romainneutron/Silex,akucherevskiy/developex_test,peterkokot/Silex,CarsonF/Silex,fabpot/Silex,akucherevskiy/developex_test,Tobion/Silex,SanderKnape/Silex,GromNaN/Silex,tcx1000/Silex,naderman/Silex,mmauri04/Silex,Tobion/Silex,plotek/Silex,CarsonF/Silex,CarsonF/Silex,RayRutjes/Silex,lyrixx/Silex,silexphp/Silex,GromNaN/Silex,Incognito/silex-fork,mTorres/Silex,mTorres/Silex,Xephi/Silex,GromNaN/Silex,arduanov/Silex,fhinkel/Silex,gencer/Silex,naderman/Silex,beealone/Silex,jdreesen/Silex,romainneutron/Silex,Incognito/silex-fork,akucherevskiy/developex_test,peterkokot/Silex,peterkokot/Silex,cgsmith/Silex,SanderKnape/Silex,naderman/Silex,tcx1000/Silex,Xephi/Silex,RayRutjes/Silex,beealone/Silex,SpacePossum/Silex,SpacePossum/Silex,mathroc/Silex,romainneutron/Silex