Hy: add to README and travis.

.travis.yml

@@ -38,6 +38,7 @@ matrix:
     - {env: IMPL=haxe haxe_MODE=python, services: [docker]}
     - {env: IMPL=haxe haxe_MODE=cpp,    services: [docker]}
     - {env: IMPL=haxe haxe_MODE=js,     services: [docker]}
+    - {env: IMPL=hy,        services: [docker]}
     - {env: IMPL=io,        services: [docker]}
     - {env: IMPL=java,      services: [docker]}
     - {env: IMPL=js,        services: [docker]}

README.md

@@ -6,7 +6,7 @@
 
 Mal is a Clojure inspired Lisp interpreter.
 
-Mal is implemented in 69 languages:
+Mal is implemented in 70 languages:
 
 * Ada
 * GNU awk
@@ -36,6 +36,7 @@ Mal is implemented in 69 languages:
 * GNU Smalltalk
 * Haskell
 * Haxe (Neko, Python, C++ and JavaScript)
+* Hy
 * Io
 * Java
 * JavaScript ([Online Demo](http://kanaka.github.io/mal))
@@ -501,6 +502,15 @@ make all-js
 node ./stepX_YYY.js
 ```
 
+### Hy
+
+The Hy implementation of mal has been tested with Hy 0.13.0.
+
+```
+cd hy
+./stepX_YYY.hy
+```
+
 ### Io
 
 *The Io implementation was created by [Dov Murik](https://github.com/dubek)*