Merge branch 'master' into codeclimate

Author: gkorland

README.md

@@ -16,6 +16,7 @@
     <a href="https://coveralls.io/r/NodeRedis/node-redis?branch="><img src="https://coveralls.io/repos/NodeRedis/node-redis/badge.svg?branch=master" alt="Coverage Status" /></a>
     <a href="https://twitter.com/NodeRedis"><img src="https://img.shields.io/twitter/follow/NodeRedis.svg?style=flat-square&colorA=1da1f2&colorB=&label=Follow%20on%20Twitter" alt="Follow on Twitter"></a>
     <a href="https://codeclimate.com/github/NodeRedis/node-redis/maintainability"><img src="https://api.codeclimate.com/v1/badges/f6d7063243c234237e73/maintainability" /></a>
+    <a href="https://lgtm.com/projects/g/NodeRedis/node-redis/context:javascript"><img src="https://img.shields.io/lgtm/grade/javascript/g/NodeRedis/node-redis.svg?logo=lgtm&logoWidth=18" alt="Coverage Status" /></a>
 </p>
 
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