add travis notifications

.travis.yml

@@ -1,15 +1,19 @@
 language: php
 php:
-  - '7.1'
-  - '7.2'
-  - '7.3'
+- '7.1'
+- '7.2'
+- '7.3'
 install:
-  - composer install
-  - echo "elasticroute_api_key=$API_KEY" >> tests/.env
-  - echo "elasticroute_path=$ER_PATH" >> tests/.env
-  - cat tests/.env.example >> tests/.env
+- composer install
+- echo "elasticroute_api_key=$API_KEY" >> tests/.env
+- echo "elasticroute_path=$ER_PATH" >> tests/.env
+- cat tests/.env.example >> tests/.env
 script:
-  - mkdir -p build/logs
-  - vendor/phpunit/phpunit/phpunit tests --bootstrap tests/bootstrap.php --whitelist src --coverage-clover build/logs/clover.xml
+- mkdir -p build/logs
+- vendor/phpunit/phpunit/phpunit tests --bootstrap tests/bootstrap.php --whitelist
+  src --coverage-clover build/logs/clover.xml
 after_success:
-  - travis_retry php vendor/bin/php-coveralls -v
+- travis_retry php vendor/bin/php-coveralls -v
+notifications:
+  slack:
+    secure: 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