Added data structure section to readme
Added data structure section to readme

XIVStats/XIVStats-Gatherer-Java,XIVStats/XIVStats-Gatherer-Ruby,XIVStats/XIVStats-Gatherer-Java,XIVStats/XIVStats,hmschreck/XIVStats,XIVStats/XIVStats-Gatherer-Java,fahy/XIVStats-Gatherer-Ruby