added a sample plugin for a more detailed changed event
added a sample plugin for a more detailed changed event

vakata/jstree,Aliccer/jstree,opencmii/jstree,samokspv/jstree,gustavobg/jstree,JuseChen/jstree,beealone/jstree,duzun/jstree,samokspv/jstree,JuseChen/jstree,Aliccer/jstree,sadfuzzy/jstree,jacksonpradolima/jstree,neogis-de/jstree,iCasa/jstree,Aliccer/jstree,Project-TF/jstree,Contagious06/jstree,iCasa/jstree,samokspv/jstree,beealone/jstree,codio/jstree,jacksonpradolima/jstree,JuseChen/jstree,aihua/jstree,ninvfeng/jstree,Contagious06/jstree,Contagious06/jstree,aihua/jstree,jacksonpradolima/jstree,neogis-de/jstree,iCasa/jstree,neogis-de/jstree,opencmii/jstree,duzun/jstree,gustavobg/jstree,beealone/jstree,opencmii/jstree,Project-TF/jstree,ninvfeng/jstree,sadfuzzy/jstree,codio/jstree,gustavobg/jstree,sadfuzzy/jstree,ninvfeng/jstree,aihua/jstree,vakata/jstree