Merge pull request #153 from chainer/muupan-patch-1

Fix a broken link to travis ci

README.md

@@ -1,7 +1,7 @@
 <div align="center"><img src="assets/ChainerRL.png" width="400"/></div>
 
 # ChainerRL
-[![Build Status](https://travis-ci.org/chainer/chainerrl.svg?branch=master)](https://travis-ci.org/pfnet/chainerrl)
+[![Build Status](https://travis-ci.org/chainer/chainerrl.svg?branch=master)](https://travis-ci.org/chainer/chainerrl)
 [![Coverage Status](https://coveralls.io/repos/github/chainer/chainerrl/badge.svg?branch=master)](https://coveralls.io/github/chainer/chainerrl?branch=master)
 [![Documentation Status](https://readthedocs.org/projects/chainerrl/badge/?version=latest)](http://chainerrl.readthedocs.io/en/latest/?badge=latest)
 [![PyPI](https://img.shields.io/pypi/v/chainerrl.svg)](https://pypi.python.org/pypi/chainerrl)