send build status on gitter

Author: ichiriac

.travis.yml

@@ -3,6 +3,12 @@ node_js:
   - '0.12'
 notifications:
   email: false
+  webhooks:
+    urls:
+      - https://webhooks.gitter.im/e/f1d48355795bf25a8f9a
+    on_success: change
+    on_failure: always
+    on_start: never
 before_script:
   - sudo apt-get install python-software-properties -y
   - sudo LC_ALL=C.UTF-8 add-apt-repository ppa:ondrej/php -y