test gitter.im integration

.travis.yml

@@ -46,3 +46,11 @@ script:
   - haxe -version
   - haxe -neko RunTravis.n -main RunTravis -lib hx-yaml
   - neko RunTravis.n
+
+notifications:
+  webhooks:
+    urls:
+      - https://webhooks.gitter.im/e/95a5fa471c27beee8e7c
+    on_success: change  # options: [always|never|change] default: always
+    on_failure: always  # options: [always|never|change] default: always
+    on_start: false     # default: false