add MIT license
add MIT license

pengzhangdev/slackbot,kivra/slackbot,grantvix/images,TimZehta/slackbot,lins05/slackbot,foresterh/slackbot,merqurio/slackbot,foresterh/slackbot,philfung/slackbot,kenden/slackbot,smalenfant/slackbot,jathanism/slackbot,philfung/slackbot,jathanism/slackbot,lins05/slackbot,s1ider/slackbot,s1ider/slackbot,kave/zenhub-slackbot,kenden/slackbot,merqurio/slackbot,kienpham2000/slackbot,smalenfant/slackbot,zatonovo/slackbot,Haukiii/slackbot,TimZehta/slackbot,pengzhangdev/slackbot,Haukiii/slackbot,kienpham2000/slackbot,STANAPO/slackbot,STANAPO/slackbot,kivra/slackbot,kave/zenhub-slackbot,zatonovo/slackbot,hotsyk/slackbot,hotsyk/slackbot