Added link to ruby/rubymotion port

README.md

@@ -253,6 +253,11 @@ during this project's development.
 - http://talk.commonmark.org - CommonMark forum, good place to collaborate
   developers' efforts.
 
+**Ports**
+
+- [motion-markdown-it](https://github.com/digitalmoksha/motion-markdown-it) - Ruby/RubyMotion
+
+
 ## License
 
 [MIT](https://github.com/markdown-it/markdown-it/blob/master/LICENSE)