README.md: add Travis CI badge

It happened again, sorry. I've tagged the previous commit but wrote the two magic words and Travis didn't run the build :( Apologies. Let's try again.
typemytype · Oct 18, 2016 · ec316a4 · ec316a4
1 parent de02d36
commit ec316a4
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/README.md b/README.md
@@ -1,3 +1,4 @@
+[![Build Status](https://api.travis-ci.org/typemytype/booleanOperations.svg)](https://travis-ci.org/typemytype/booleanOperations)
 [![PyPI](https://img.shields.io/pypi/v/booleanOperations.svg)](https://pypi.org/project/booleanOperations/)
 ![Python Versions](https://img.shields.io/badge/python-2.7%2C%203.4%2C%203.5-blue.svg)