Add travis configuration (pypa#300)

Jon Wayne Parrott · ncoghlan · commit 286feabb3510 · 2017-04-22T14:52:42.000+10:00
diff --git a/.travis.yml b/.travis.yml
@@ -0,0 +1,6 @@
+language: python
+sudo: false
+python:
+- 2.7
+install: pip install sphinx
+script: make SPHINXOPTS="-W" html
