set up notifications for build

.travis.yml

@@ -1,14 +1,20 @@
 language: python
 python:
-  - "2.6"
-  - "2.7"
-  - "3.2"
-  - "3.3"
+- '2.6'
+- '2.7'
+- '3.2'
+- '3.3'
 install:
-  - pip install -r requirements.txt --use-mirrors
-  - pip install coverage
-  - pip install coveralls 
+- pip install -r requirements.txt --use-mirrors
+- pip install coverage
+- pip install coveralls
 script:
-  - nosetests --with-coverage --cover-package=paypalrestsdk --include=paypalrestsdk/*
+- nosetests --with-coverage --cover-package=paypalrestsdk --include=paypalrestsdk/*
 after_success:
-  - coveralls
+- coveralls
+notifications:
+  webhooks:
+    urls:
+     - secure: AQB+jHDVe3JuypMbSFxIObXIlB87ft2zqgVjXctmMu1qfybn9FzL6azrhL+rnVYb9O2paoETKX73jiJTcaN4yu/l92XG3qqinzISu1rhAE0Nx0uBnZD8VAKq7synCRqSuGvhe1PRT7HnqimJU4OjBtkXd20rRkJd0LhNf+PvXAU=
+    on_success: change
+    on_failure: always