Update .travis.yml

Added notifications to gitter

Author: TVolden

.travis.yml

@@ -9,3 +9,11 @@ sudo: false # faster builds
 
 #after_success:
 #- bash <(curl -s https://codecov.io/bash)
+
+notifications:
+  webhooks:
+    urls:
+      - https://webhooks.gitter.im/e/b53783164e024ebb35d3
+    on_success: change  # options: [always|never|change] default: always
+    on_failure: always  # options: [always|never|change] default: always
+    on_start: never     # options: [always|never|change] default: always