Added See Also links (#66)

At the bottom of the document (above the footer), I added links to other guides that readers may find to be useful.

README.adoc

 
 == Summary
 
-Congratulations! You've just developed a RESTful web service with Spring. 
+Congratulations! You've just developed a RESTful web service with Spring.
+
+== See Also
+
+The following guides may also be helpful:
+
+* https://spring.io/guides/gs/accessing-gemfire-data-rest/[Accessing GemFire Data with REST]
+* https://spring.io/guides/gs/accessing-mongodb-data-rest/[Accessing MongoDB Data with REST]
+* https://spring.io/guides/gs/accessing-data-mysql/[Accessing data with MySQL]
+* https://spring.io/guides/gs/accessing-data-rest/[Accessing JPA Data with REST]
+* https://spring.io/guides/gs/accessing-neo4j-data-rest/[Accessing Neo4j Data with REST]
+* https://spring.io/guides/gs/consuming-rest/[Consuming a RESTful Web Service]
+* https://spring.io/guides/gs/consuming-rest-angularjs/[Consuming a RESTful Web Service with AngularJS]
+* https://spring.io/guides/gs/consuming-rest-jquery/[Consuming a RESTful Web Service with jQuery]
+* https://spring.io/guides/gs/consuming-rest-restjs/[Consuming a RESTful Web Service with rest.js]
+* https://spring.io/guides/gs/securing-web/[Securing a Web Application]
+* https://spring.io/guides/tutorials/bookmarks/[Building REST services with Spring]
+* https://spring.io/guides/tutorials/react-and-spring-data-rest/[React.js and Spring Data REST]
+* https://spring.io/guides/gs/spring-boot/[Building an Application with Spring Boot]
+* https://spring.io/guides/gs/testing-restdocs/[Creating API Documentation with Restdocs]
+* https://spring.io/guides/gs/rest-service-cors/[Enabling Cross Origin Requests for a RESTful Web Service]
+* https://spring.io/guides/gs/rest-hateoas/[Building a Hypermedia-Driven RESTful Web Service]
+* https://spring.io/guides/gs/circuit-breaker/[Circuit Breaker]
 
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