Support for ioredis

[thepipster]

Added support for ioredis, issue #120, by converting uppercase function names to lowercase and reducing connection detection strictness

[maritz]

Thank you very much for this PR!

A couple of questions/requests, since I never really looked into ioredis in depth:

• does it not offer a .connected equivalent?
• could you do a check for whether connected is undefined or boolean, if it's boolean do the check (old way) if it's undefined just go ahead (current PR way)
• could you add a check for an env var (e.g. NOHM_TEST_IOREDIS="true") to run all tests with ioredis instead of node-redis? This is a bit more work and I totally understand if you don't want to do it. In that case I will add it, but it'll take some time. I would then add it to travis.yml so that it runs all tests once with node-redis and once with ioredis.

[maritz]

Also, .DS_Store is a macOS specific file, right? Should probably be added to .gitignore instead of adding it to the repo :-)

[thepipster]

Thanks, sorry for delay - I'll take a look.

[thepipster]

So I think ioredis has the equivalent;

(client.connected || client.status === 'connect')

[thepipster]

I made those changes, but the tests are failing (I think) at deleteNonExistant - might need some help to debug...

[maritz]

Wasn't quite as simple as I had hoped, but now all tests pass with node_redis and ioredis.

See #138 for the changes I added. I will probably close this one and then merge #138, unless you want to do some more work on any of this, then I'd recommend pulling in my 1 commit and then we can continue here.

[maritz]

One thing that could still be added, but is entirely optional and could also go into its own PR is ioredis support in extra/stress.js.

Documentation is also missing for now.

[thepipster]

Awesome, thanks!