Update README.md to include DZone.com publications.
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|> In this example the [Dgraph Slash GraphQL](https://dgraph.io/slash-graphql) service is utilized to populate data into a [Slope One](https://en.wikipedia.org/wiki/Slope_One) ratings algorithm to act as a recommendation engine - based upon data found in Dgraph Slash GraphQL.|
|This repository is related to a two-part series published on DZone.com:|
|* Part #1 - [Building an Amazon-Like Recommendation Engine Using Slash GraphQL](https://dzone.com/articles/building-a-recommendations-engine-using-spring-boo)|
|* Part #2 - [Connecting Angular to the Spring Boot and Slash GraphQL Recommendations Engine](https://dzone.com/articles/connecting-angular-to-the-spring-boot-and-slash-gr)|
|## Slash GraphQL Configuration|
|After creating a free Dgraph Slash GraphQL account, the following schema needs to be created:|