Configure coverage reporting with coveralls.io

.travis.yml

@@ -5,6 +5,11 @@ python:
 
 install:
   - pip install -r requirements.txt
+  - pip install python-coveralls
+  - pip install coverage
 
 script:
   - python -m unittest
+
+after_success:
+  - coveralls

README.md

@@ -1,8 +1,12 @@
 # Flask-IPFilter
 
 [![Build Status](https://travis-ci.org/douganger/flask-ipfilter.svg?branch=master)](https://travis-ci.org/douganger/flask-ipfilter)
-[![Documentation Status](https://readthedocs.org/projects/flask-ipfilter/badge/?version=latest)](https://flask-ipfilter.readthedocs.io/en/latest/?badge=latest)
-[![Codacy Badge](https://api.codacy.com/project/badge/Grade/fbff22f2f804412790ee10601e8b6949)](https://www.codacy.com/app/douganger/flask-ipfilter)
+[![Coverage
+Status](https://coveralls.io/repos/github/douganger/flask-ipfilter/badge.svg?branch=master)](https://coveralls.io/github/douganger/flask-ipfilter?branch=master)
+[![Documentation
+Status](https://readthedocs.org/projects/flask-ipfilter/badge/?version=latest)](https://flask-ipfilter.readthedocs.io/en/latest/?badge=latest)
+[![Codacy
+Badge](https://api.codacy.com/project/badge/Grade/fbff22f2f804412790ee10601e8b6949)](https://www.codacy.com/app/douganger/flask-ipfilter)
 
 Flask-IPFilter is a simple Flask extension to limit access to a site to certain
 IP addresses. The current implementation is a minimal proof of concept with some