Add support to optionally use redislite

[dwighthubbard]

No description provided.

[prologic]

👍 I'm defintely going to use this :)

[prologic]

Ignore my last silly comment :-) I'm merging your fork into mine and testing this out

[prologic]

So 👍 it works really nicely :)

[prologic]

Hey @dwighthubbard I tried out your patch/pull-request in my branch and I found an issue that I'd like to address:

• We need a way to be explicit about whether we use redis or redislite here.

Right now I think you use Redislite if it's "importable". The use-case I want to have for https://github.com/prologic/charla is:

charla --embedded

Makes sense? :)

[dwighthubbard]

Redislite will pass the request through to the Redis module if the user passes a hostname or socketfile of a Redis server as an argument. This was done in order to prevent the need to write code in every app to fail back to Redis if the user doesn't want to use the embedded server.