Update README.md

Santiago Palladino · web-flow · commit 342fb5121ecd · 2017-02-16T13:39:57.000-03:00
Add link to roadmap
diff --git a/README.md b/README.md
@@ -52,6 +52,7 @@ Documentation
 
 * [Official docs](http://crystal-lang.org/docs)
 * [Standard library API](https://crystal-lang.org/api)
+* [Roadmap](https://github.com/crystal-lang/crystal/wiki/Roadmap)
 
 Community
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