Merge pull request #213 from dahlia/macos-auto-rebuilder

Automatically rebuild macOS build (upto 5 times) if it's failed

Author: kanghyojun

.travis.yml

@@ -98,7 +98,9 @@ before_deploy:
   fi
 notifications:
   webhooks:
-    urls: ['https://webhooks.gitter.im/e/29cc2477daa438db4e9d']
+    urls:
+    - https://webhooks.gitter.im/e/29cc2477daa438db4e9d
+    - 'http://travis-auto-rebuilder.herokuapp.com/76caecf7-abe1-4122-9fcc-aa5226dc10f8/?jobs=1&retries=5'
     on_success: change
     on_failure: always
     on_start: never