Error when passing redisClient and not uri

[palmtown]

Steps to reproduce

• Tell us what broke. The more detailed the better.

If passing a redisClient object as shown in Exhibit 1, current code will throw an error as it is expecting the uri. However, when passing the redisClient the uri is not required.

Exhibit 1
app.configure( sync({ redisClient }) );

• If you can, please create a simple example that reproduces the issue and link to a gist, jsbin, repo, etc.

You can reproduce by configuring feathersjs sync as shown in the Exhibit 1 snipplet above.

Expected behavior

Code should not generate an error when a redisClient object is passed.

Actual behavior

Code throws the error: A uri option with the database connection string, or a redisClient object has to be provided to feathers-sync

I have resolved the issue and created a pull request at: #196