给每个注册用户发放CloudSlides demoPPT.
Merge branches 'dev-iron' and 'dev-iron' of https://github.com/FeverTeam/LivePPT-Play2 into dev-iron
删除一句无用代码。
Merge pull request #60 from FeverTeam/dev-iron

Dev iron
Merge pull request #61 from FeverTeam/dev

Dev