Python 3 plus flake8 changes (#2)

* Python 3 plus flake8 changes

* Create .travis to run flake8 on pull requests

Use `--exit-zero` to silence all flake8 errors.

* Update .travis

* Rename .travis to .travis.yml

* revert wsk changes

* Turn off slack notification
diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 0000000..aee4273
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,29 @@
+sudo: false
+
+language: python
+python:
+    - "2.7.13"
+    - "3.6.0"
+#   - "nightly"  # currently points to 3.7-dev
+
+before_install:
+    - pip install --upgrade pip setuptools
+
+install:
+    - pip install flake8
+
+before_script:
+    - flake8 . --count --max-line-length=127 --statistics --exit-zero
+
+script:
+    - ls  # a basic no-op
+
+notifications:
+  email:
+  #slack: false
+  #  rooms:
+  #    - secure: "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"
+  #    - secure: "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"
+    on_pull_requests: false
+    on_success: change
+    on_failure: always