travis: added gitter notifcations

.travis.yml

@@ -5,3 +5,11 @@ before_install:
 
 script: 
   - cd ./ardupilot && Tools/scripts/build_all_travis.sh
+
+notifications:
+  webhooks:
+    urls:
+      - https://webhooks.gitter.im/e/e5e0b55e353e53945b4b
+    on_success: change  # options: [always|never|change] default: always
+    on_failure: always  # options: [always|never|change] default: always
+    on_start: false     # default: false