added massload to the docs
added massload to the docs

beealone/jstree,neogis-de/jstree,codio/jstree,aihua/jstree,JuseChen/jstree,Contagious06/jstree,Aliccer/jstree,500tech/jstree,Project-TF/jstree,ninvfeng/jstree,sadfuzzy/jstree,codio/jstree,opencmii/jstree,JuseChen/jstree,vakata/jstree,jacksonpradolima/jstree,jacksonpradolima/jstree,Contagious06/jstree,ninvfeng/jstree,sadfuzzy/jstree,gustavobg/jstree,duzun/jstree,sadfuzzy/jstree,vakata/jstree,beealone/jstree,gustavobg/jstree,opencmii/jstree,gustavobg/jstree,jacksonpradolima/jstree,neogis-de/jstree,Aliccer/jstree,Aliccer/jstree,Contagious06/jstree,aihua/jstree,duzun/jstree,500tech/jstree,samokspv/jstree,ninvfeng/jstree,JuseChen/jstree,iCasa/jstree,samokspv/jstree,opencmii/jstree,iCasa/jstree,samokspv/jstree,iCasa/jstree,neogis-de/jstree,aihua/jstree,beealone/jstree,Project-TF/jstree,500tech/jstree