Added links to documentation

Nyholm · nicolas-grekas · commit 59b94061d383 · 2019-03-11T19:22:29.000+01:00
diff --git a/README.md b/README.md
@@ -6,6 +6,12 @@ Provides integration for PSR7.
 Resources
 ---------
 
+  * [Documentation](https://symfony.com/doc/current/components/psr7.html)
+  * [SensioFrameworkExtraBundle](https://symfony.com/doc/current/bundles/SensioFrameworkExtraBundle/index.html#psr-7-support)
+
+Running the tests
+-----------------
+
 If you want to run the unit tests, install dev dependencies before
 running PHPUnit:
 
