Merge pull request graphql#734 from jpdriver/patch-1

add urql to list of JavaScript Clients

Author: orta

site/code/index.html.js

@@ -481,6 +481,7 @@ Executor.execute(schema, query) map println
   - [gq-loader](https://github.com/Houfeng/gq-loader): A simple JavaScript GraphQL client，Let the *.gql file be used as a module through webpack loader.
   - [AWS Amplify](https://aws.github.io/aws-amplify): A JavaScript library for application development using cloud services, which supports GraphQL backend and React components for working with GraphQL data.
   - [Grafoo](https://github.com/grafoojs/grafoo): An all purpose GraphQL client with view layer integrations for multiple frameworks in just 1.6kb.
+  - [urql](https://formidable.com/open-source/urql/) ([github](https://github.com/FormidableLabs/urql)): A highly customizable and versatile GraphQL client for React.
 
 ### Swift / Objective-C iOS