Merge pull request #24 from itcraftsmanpl/r2

Fix documentation badge

CHANGELOG.md

@@ -5,6 +5,8 @@ This changelog references the relevant changes done in PHP-ML library.
 
 * 0.2.1 (in plan/progress)
     * feature [Regression] - SSE, SSTo, SSR  - sum of the squared
+    * feature [Association] - Apriori algorithm implementation
+    * bug [Metric] - division by zero
 
 * 0.2.0 (2016-08-14)
     * feature [NeuralNetwork] - MultilayerPerceptron and Backpropagation training 

README.md

@@ -3,7 +3,7 @@
 [![Minimum PHP Version](https://img.shields.io/badge/php-%3E%3D%207.0-8892BF.svg)](https://php.net/)
 [![Latest Stable Version](https://img.shields.io/packagist/v/php-ai/php-ml.svg)](https://packagist.org/packages/php-ai/php-ml)
 [![Build Status](https://scrutinizer-ci.com/g/php-ai/php-ml/badges/build.png?b=develop)](https://scrutinizer-ci.com/g/php-ai/php-ml/build-status/develop)
-[![Documentation Status](https://readthedocs.org/projects/php-ml/badge/?version=develop)](http://php-ml.readthedocs.org/en/develop/?badge=develop)
+[![Documentation Status](https://readthedocs.org/projects/php-ml/badge/?version=master)](http://php-ml.readthedocs.org/)
 [![Total Downloads](https://poser.pugx.org/php-ai/php-ml/downloads.svg)](https://packagist.org/packages/php-ai/php-ml)
 [![License](https://poser.pugx.org/php-ai/php-ml/license.svg)](https://packagist.org/packages/php-ai/php-ml)
 [![Scrutinizer Code Quality](https://scrutinizer-ci.com/g/php-ai/php-ml/badges/quality-score.png?b=develop)](https://scrutinizer-ci.com/g/php-ai/php-ml/?branch=develop)