email notifications about failed builds

.travis.yml

@@ -1,7 +1,13 @@
-language: java
+language: java
-jdk: [oraclejdk8]
+jdk: [oraclejdk8]
-before_install: 
+before_install: 
-    - sudo chmod a+x ./travis/*.sh
+    - sudo chmod a+x ./travis/*.sh
-    - ./travis/before_install.sh
+    - ./travis/before_install.sh
-install: ./travis/install.sh
+install: ./travis/install.sh
-script: ./travis/script.sh
+script: ./travis/script.sh
+notifications:
+  email:
+    recipients:
+      - [email protected]    
+    on_success: change
+    on_failure: always