fix(ci): added encrypted pypi deploy key (#8)

Author: reggeenr

.travis_public.yml

@@ -32,7 +32,8 @@ script:
 deploy:
 - provider: pypi
   user: __token__
-  password: $PYPI_TOKEN
+  password:
+    secure: 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
   repository: https://upload.pypi.org/legacy
   skip_cleanup: true
   on: