Add Chat update, ConversationOpen, input placeholder#23

johnkors merged 3 commits intodotnetbots:maindotnetbots/Slackbot.Net:mainfrom

murdahl:dev/murdahl/add-update-message-and-Conversation-openmurdahl/Slackbot.Net:dev/murdahl/add-update-message-and-Conversation-openCopy head branch name to clipboard