Add Building a GraphQL Server with Node.js and SQL blogpost

Author: enaqx

README.md

@@ -788,6 +788,7 @@ A collection of awesome things regarding React ecosystem.
 * [GraphQL and g2sd](https://fistfulofbytes.com/graphql-and-g2sd)
 * [GraphQL Overview - Getting Started with GraphQL and Node.js](https://blog.risingstack.com/graphql-overview-getting-started-with-graphql-and-nodejs/)
 * [Writing a Basic API with GraphQL](http://davidandsuzi.com/writing-a-basic-api-with-graphql/)
+* [Building a GraphQL Server with Node.js and SQL](https://www.reindex.io/blog/building-a-graphql-server-with-node-js-and-sql/)
 
 ##### GraphQL Implementations
 * [graphql-js - A reference implementation of GraphQL for **JavaScript**](https://github.com/graphql/graphql-js)