fix making a user an admin multiple times over
Merge pull request #661 from lusis/admin_admin_admin_admin

fix making a user an admin multiple times over
use any registered extension
added Slack adapter to the list
Merge pull request #671 from Restuta/patch-1

added Slack adapter to the list
Add Lingr adapter
Add a quick note about Script Load Order. Fixes #675
Merge pull request #677 from miyagawa/adapter-lingr

Add Lingr adapter
Merge pull request #667 from jbr/master

Alllow hubot scripts to be written in other languages
Version bump 2.7.3
Close trailing backtick