add notification to slack channel on build success

Author: AllenAnthes

.travis.yml

@@ -29,4 +29,4 @@ after_success:
 notifications:
   slack:
     rooms:
-    - secure: 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
+    - secure: IHCeuADN/z/ZGsdDNOdrs6U+k9NIersT5eScbH+ViHvgYhQV7ZkfMJYjLk0ftpC/a2AOJZ6QmMT8D9Ahdbh8TugfH9Me+uAzxEFb5WN9HKl8l4DoVeJUoOz0+ASRSm68He+jeJEOIEIF1wi7wfs3p+ngzST8QOxif/VkfXzwKnjKKlASesPtVWC0Yp8P7Ac0rwThZxkWho53s4Y9bM6lg42EPnBN/xB58fGMUh5bYNTQBZGHzNmoaNTtifYIjtfqgp601nyeh90A9ZCbgEZiXRQmH4Ge9w//i3mKKT1c4JU/t0ZPlZQDNnZit9UNtovrzozpJ2UVAEA7dQwoHEbLwymTchYjD6FRGlGuNDdmv1ov6hleVEc6JNCpQCu1izD7sdkkAnH5TwasifJfX3LmXVSrgdE3niDgteBXpqwQXbCCItxNZdUSrgjKMSGWGrDHO+2MwNCRYwYFcns3Q4UFcltNCADjIIHKcKVCIdRwA+9zQQ1kUzzPS0cvEbiTsHNxxqFJNQhAfFrQqiBeBMjz/K2i1aGcFIxEs7etsFkiktTB6Mezrys0Pm8+9fJWkcZfldD8QHJI6gVX7cqymEXp6aBZ6qjen/Dh8LuUuoTDw1F3E1ISr4sg4tpxJzP3GkcFdC4KHssfO4OZAaEUvbFZHxHcPhvAj3+1a83DqvrHFO0=