Add version badges to README

Author: mcous

README.md

@@ -1,3 +1,6 @@
-# Language support for Scala in Atom.
+# Language support for Scala in Atom
 
-Converted from the [Scala TextMate bundle](https://github.com/mads379/scala.tmbundle)
+[![apm](https://img.shields.io/apm/v/language-scala.svg?style=flat-square)](https://atom.io/packages/language-scala)
+[![npm](https://img.shields.io/npm/v/language-scala.svg?style=flat-square)](https://www.npmjs.com/package/language-scala)
+
+[Scala grammar](https://atom.io/packages/language-scala) for [Atom](https://atom.io). Originally converted from the [Scala TextMate bundle](https://github.com/mads379/scala.tmbundle). Also available as a [Node package](https://www.npmjs.com/package/language-scala).