added some comment to clarify the intent of the example (closes #30)
added some comment to clarify the intent of the example (closes #30)

laborautonomo/Sami,forging2012/Sami,TiS/Sami,piwik/Sami,jeskew/Sami,TobyMaxham/Sami,edos-io/Sami,php-opencloud/Sami,php-opencloud/Sami,scribenet/Sami,piwik/Sami,derFunk/Sami,FriendsOfPHP/Sami,edos-io/Sami,TiS/Sami,scribenet/Sami,TobyMaxham/Sami,derFunk/Sami,forging2012/Sami,FriendsOfPHP/Sami,jeskew/Sami