Added repository and bugs links.
Added repository and bugs links.

andrewvy/slack-pongbot,jinpark/pongbot-2,andrewvy/slack-pongbot,clementmiao/slack-smashbot,geoffrey/slack-pongbot,garukun/slack-pongbot,garukun/slack-pongbot,geoffrey/slack-pongbot,jinpark/pongbot-2