Added link to freenode IRC channel.
Added link to freenode IRC channel.

kave/zenhub-slackbot,TimZehta/slackbot,merqurio/slackbot,pengzhangdev/slackbot,pengzhangdev/slackbot,lins05/slackbot,TimZehta/slackbot,grantvix/images,kave/zenhub-slackbot,merqurio/slackbot,lins05/slackbot