Allow passing a REDIS_URL

[darkpixel]

Support passing in a REDIS_URL.

i.e. process.env.REDIS_URL === 'redis://:secrets@example.com:1234'

[davidgatti]

Agree

[davidgatti]

@darkpixel check my pull request. It is actually one line of code change, so even if this pull request won't be accepted you can easily modify the source code of this module in your project :)

[darrachequesne]

Closed by #41 (released as 1.1.0)