Make use of Boot's Jedis-based Redis auto-configuration

I used this guide as part of testing that I'd correctly updated Boot to use Jedis rather than Lettuce. Rather than work being thrown away, I thought it would be worth finishing it off and turning it into a PR to be applied once the Guides are referencing Boot 1.1.0.

Note: the PR is currently using a 1.1.0 snapshot of Boot and should be updated as part of the merge