Add travis CI (#1)

Add Travis CI support
Run flake8 on py27, py34, py35
diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 0000000..e73b474
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,12 @@
+language: python
+sudo: false
+os:
+  - linux
+python:
+  - '2.7'
+  - '3.4'
+  - '3.5'
+install:
+  - pip install -U pip
+  - pip install -U tox-travis
+script: tox -v -epep8