Added comment about joining strings
Added comment about joining strings

jeffmahoney/supybot,mazaclub/mazabot-core,raboof/supybot,mazaclub/mazabot-core,buildbot/supybot,Ban3/Limnoria,kblin/supybot-gsoc,Ban3/Limnoria,haxwithaxe/supybot,ProgVal/Limnoria-test,frumiousbandersnatch/supybot-code,prashantpawar/supybot-rothbot,ProgVal/Limnoria-test