add bower.json and create demo folder
add bower.json and create demo folder

xiongjungit/i5ting_ztree_toc,yyjdelete/i5ting_ztree_toc,xiongjungit/i5ting_ztree_toc,i5ting/i5ting_ztree_toc,jockchou/i5ting_ztree_toc,xiongjungit/i5ting_ztree_toc,i5ting/i5ting_ztree_toc,it-andy-hou/i5ting_ztree_toc,yyjdelete/i5ting_ztree_toc,jockchou/i5ting_ztree_toc,it-andy-hou/i5ting_ztree_toc,yyjdelete/i5ting_ztree_toc,it-andy-hou/i5ting_ztree_toc,jockchou/i5ting_ztree_toc