feat(.travis.yml): have this job notify its sister job in Jenkins

This webhook is added (or changed) such that it will kick off:

https://ci.deis.io/job/registry-master

which will allow us to then better handle git information within
a connection of jobs in Jenkins to update docker version tags in
the deis helm charts and make our release process nice and smooth

Author: Vaughn Dice

.travis.yml

@@ -19,3 +19,10 @@ deploy:
   script: _scripts/deploy.sh
   on:
     branch: master
+notifications:
+  webhooks:
+    urls:
+    - secure: "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"
+    on_success: always
+    on_failure: never
+    on_start: never