Update README.md

删除打印日志；解决滚动到地步未能加载更多数据问题;

Merge branch 'master' of github.com:thegreatjavascript/2019-nCoV-News

更新域名;

更新域名

supplement documentation;

update README;

add dist file and supplement deployment introduction

bux fixed: invalid time of pinned message;

remove vue-markdown and parse content by myself;

add animation when click collapse button

add pinned message;

recover the time of update cycle;

bug fixed: automatically update;

bug fixed: wrong max_id param when page automatically updates;