release/0.7.0: Add stack overflow badge

readme.md

@@ -3,8 +3,6 @@
 
 [![Build Status stable branch](https://img.shields.io/travis/nok/sklearn-porter/stable.svg)](https://travis-ci.org/nok/sklearn-porter)
 [![PyPI](https://img.shields.io/pypi/v/sklearn-porter.svg)](https://pypi.python.org/pypi/sklearn-porter)
-[![PyPI](https://img.shields.io/pypi/pyversions/sklearn-porter.svg)](https://pypi.python.org/pypi/sklearn-porter)
-[![GitHub license](https://img.shields.io/pypi/l/sklearn-porter.svg)](https://raw.githubusercontent.com/nok/sklearn-porter/master/license.txt)
 
 Transpile trained [scikit-learn](https://github.com/scikit-learn/scikit-learn) estimators to C, Java, JavaScript and others.<br>It's recommended for limited embedded systems and critical applications where performance matters most.
 
@@ -148,7 +146,9 @@ Transpile trained [scikit-learn](https://github.com/scikit-learn/scikit-learn) e
 
 ### Stable
 
-[![Build Status stable branch](https://img.shields.io/travis/nok/sklearn-porter/stable.svg)](https://travis-ci.org/nok/sklearn-porter) [![PyPI](https://img.shields.io/pypi/v/sklearn-porter.svg)](https://pypi.python.org/pypi/sklearn-porter)
+[![Build Status stable branch](https://img.shields.io/travis/nok/sklearn-porter/stable.svg)](https://travis-ci.org/nok/sklearn-porter)
+[![PyPI](https://img.shields.io/pypi/v/sklearn-porter.svg)](https://pypi.python.org/pypi/sklearn-porter)
+[![PyPI](https://img.shields.io/pypi/pyversions/sklearn-porter.svg)](https://pypi.python.org/pypi/sklearn-porter)
 
 ```bash
 $ pip install sklearn-porter
@@ -371,6 +371,8 @@ $ make lint
 
 ## Citation
 
+[![GitHub license](https://img.shields.io/pypi/l/sklearn-porter.svg)](https://raw.githubusercontent.com/nok/sklearn-porter/master/license.txt)
+
 If you use this implementation in you work, please add a reference/citation to the paper. You can use the following BibTeX entry:
 
 ```
@@ -390,6 +392,8 @@ The module is Open Source Software released under the [MIT](license.txt) license
 
 ## Questions?
 
-[![Twitter](https://img.shields.io/twitter/follow/darius_morawiec.svg?label=follow&style=popout)](https://twitter.com/darius_morawiec) [![Join the chat at https://gitter.im/nok/sklearn-porter](https://badges.gitter.im/nok/sklearn-porter.svg)](https://gitter.im/nok/sklearn-porter?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
+[![Stack Overflow](https://img.shields.io/badge/Stack%20Overflow-Ask%20questions-blue.svg)](https://stackoverflow.com/questions/tagged/sklearn-porter)
+[![Join the chat at https://gitter.im/nok/sklearn-porter](https://badges.gitter.im/nok/sklearn-porter.svg)](https://gitter.im/nok/sklearn-porter?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
+[![Twitter](https://img.shields.io/twitter/follow/darius_morawiec.svg?label=follow&style=popout)](https://twitter.com/darius_morawiec)
 
 Don't be shy and feel free to contact me on [Twitter](https://twitter.com/darius_morawiec) or [Gitter](https://gitter.im/nok/sklearn-porter).