[ci] refs skycoin#85 - Add missing parameters for Travis deploy to PyPI

- Publish sdist and wheel
- Release from tags only
- Release once when Python=3.7

.travis.yml

@@ -87,8 +87,11 @@ notifications:
   webhooks: https://fathomless-fjord-24024.herokuapp.com/notify
 deploy:
   provider: pypi
-  user: hanibal920915
+  user: olemis
+  distributions: sdist bdist_wheel
   password:
-    secure: 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
+    secure: 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
   on:
-    branch: master
+    tags: true
+    repo: skycoin/pyskycoin
+    condition: "$TOXENV = py37"