Added slack-shellbot and slack-api-explorer examples. [ci skip]
Added slack-shellbot and slack-api-explorer examples. [ci skip]
dblock/slack-bot-server,dblock/slack-ruby-bot-server,dblock/slack-bot-server,dblock/slack-ruby-bot-server,dblock/slack-bot-server,slack-ruby/slack-ruby-bot-server,slack-ruby/slack-ruby-bot-server,dblock/slack-bot-server,slack-ruby/slack-ruby-bot-server,dblock/slack-ruby-bot-server