Update email & slack notifications

.travis.yml

@@ -1,30 +1,28 @@
-language: php
-
+---
 sudo: false
-
+language: php
 php:
-  - 5.3
-  - 5.4
-  - 5.5
-  - 5.6
-  - 7.0
+  - '5.3'
+  - '5.4'
+  - '5.5'
+  - '5.6'
+  - '7.0'
   - hhvm
-
 before_install:
   - composer self-update
   - composer install --dev -n --prefer-source
   - phpenv rehash
   - mkdir -p build/logs
-
 script:
   - ./vendor/bin/phpunit -c phpunit.xml.dist
-
 after_script:
   - php vendor/bin/coveralls
-
 notifications:
   email:
+    on_failure: always
+    on_success: change
     recipients:
       - [email protected]
-    on_success: change
-    on_failure: always
+  slack:
+    rooms:
+      secure: "YD9FzE5R5vdRdeBgDa+j5oUNTy6mfZWJP1VVPgSGHLHSMerbsatUcRbmO3rf0A9in7MA+EnAjAl2RCIrJAPgyh1V449x4kK0oykLNiwk13PC3D5gJODmfiQlokHn2FlRwY52DG2NsYg7WWkMbNUjfcLVi8pLm4mc9vPUf7asg+4=\n"