Add all links

README.md

@@ -71,4 +71,11 @@ are often very busy people.
 ## Useful links
+- [Communication](communication.md) - Get in touch with the GitLab community
+- [Ideas Page](ideas.md) - The recommended ideas for GSoC 2016 and the
+  associated mentors
+- [GitLab application guidelines](guidelines.md) - Learn what are the
+  requirements for a successful application
+- [GitLab Application template](gitlab-application-template.md) - A template
+  to use for your application
 - [Development workflow](workflow.md) - The workflow of GitLab's development