Update docs badge in README

Update the URL of the docs badge to include it from inch-ci.org instead of inch-pages.github.io (the former being the successor of the Inch Pages project).

[ci skip]

Author: rrrene

README.md

@@ -1,6 +1,6 @@
 # MetricFu [![Gem Version](https://badge.fury.io/rb/metric_fu.png)](http://badge.fury.io/rb/metric_fu) [![Build Status](https://travis-ci.org/metricfu/metric_fu.png?branch=master)](http://travis-ci.org/metricfu/metric_fu)
 
-[![Code Climate](https://codeclimate.com/github/metricfu/metric_fu.png)](https://codeclimate.com/github/metricfu/metric_fu) [![Inline docs](http://inch-pages.github.io/github/metricfu/metric_fu.png)](http://inch-pages.github.io/github/metricfu/metric_fu) [![Dependency Status](https://gemnasium.com/metricfu/metric_fu.png)](https://gemnasium.com/metricfu/metric_fu)
+[![Code Climate](https://codeclimate.com/github/metricfu/metric_fu.png)](https://codeclimate.com/github/metricfu/metric_fu) [![Inline docs](http://inch-ci.org/github/metricfu/metric_fu.png)](http://inch-ci.org/github/metricfu/metric_fu) [![Dependency Status](https://gemnasium.com/metricfu/metric_fu.png)](https://gemnasium.com/metricfu/metric_fu)
 
 [Rdoc](http://rdoc.info/github/metricfu/metric_fu/)