Update ruby support for histograms

content/docs/concepts/metric_types.md

@@ -23,8 +23,8 @@ Client library usage documentation for counters:
 
    * [Go](http://godoc.org/github.com/prometheus/client_golang/prometheus#Counter)
    * [Java](https://github.com/prometheus/client_java/blob/master/simpleclient/src/main/java/io/prometheus/client/Counter.java)
-   * [Ruby](https://github.com/prometheus/client_ruby#counter)
    * [Python](https://github.com/prometheus/client_python#counter)
+   * [Ruby](https://github.com/prometheus/client_ruby#counter)
 
 ## Gauge
 
@@ -39,8 +39,8 @@ Client library usage documentation for gauges:
 
    * [Go](http://godoc.org/github.com/prometheus/client_golang/prometheus#Gauge)
    * [Java](https://github.com/prometheus/client_java/blob/master/simpleclient/src/main/java/io/prometheus/client/Gauge.java)
-   * [Ruby](https://github.com/prometheus/client_ruby#gauge)
    * [Python](https://github.com/prometheus/client_python#gauge)
+   * [Ruby](https://github.com/prometheus/client_ruby#gauge)
 
 ## Histogram
 
@@ -70,6 +70,7 @@ Client library usage documentation for histograms:
    * [Go](http://godoc.org/github.com/prometheus/client_golang/prometheus#Histogram)
    * [Java](https://github.com/prometheus/client_java/blob/master/simpleclient/src/main/java/io/prometheus/client/Histogram.java)
    * [Python](https://github.com/prometheus/client_python#histogram)
+   * [Ruby](https://github.com/prometheus/client_ruby#histogram)
 
 ## Summary
 
@@ -93,5 +94,5 @@ Client library usage documentation for summaries:
 
    * [Go](http://godoc.org/github.com/prometheus/client_golang/prometheus#Summary)
    * [Java](https://github.com/prometheus/client_java/blob/master/simpleclient/src/main/java/io/prometheus/client/Summary.java)
-   * [Ruby](https://github.com/prometheus/client_ruby#summary)
    * [Python](https://github.com/prometheus/client_python#summary)
+   * [Ruby](https://github.com/prometheus/client_ruby#summary)

content/docs/practices/histograms.md

@@ -15,11 +15,10 @@ use case.
 
 First of all, check the library support for
 [histograms](/docs/concepts/metric_types/#histogram) and
-[summaries](/docs/concepts/metric_types/#summary). Full support for
-both currently only exists in the Go client library. Many libraries
-support only one of the two types, or they support summaries only in a
-limited fashion (lacking [quantile
-calculation](#quantiles)).
+[summaries](/docs/concepts/metric_types/#summary).
+
+Some libraries support only one of the two types, or they support summaries
+only in a limited fashion (lacking [quantile calculation](#quantiles)).
 
 ## Count and sum of observations
 
@@ -226,6 +225,4 @@ Two rules of thumb:
 Implement it! [Code contributions are welcome](/community/). In general, we
 expect histograms to be more urgently needed than summaries. Histograms are
 also easier to implement in a client library, so we recommend to implement
-histograms first, if in doubt. The reason why some libraries offer summaries
-but not histograms (such as the Ruby client) is that histograms are a more
-recent feature of Prometheus.
+histograms first, if in doubt.

content/index.html

@@ -60,7 +60,7 @@ layout: jumbotron
     <div class="col-md-3 col-sm-6 col-xs-12 feature-item">
       <a href="/docs/instrumenting/clientlibs/">
         <h2><i class="fa fa-code"></i> Many client libraries</h2>
-        <p>Client libraries allow easy instrumentation of services. Currently, Go, Java, and Ruby are supported. Custom libraries are easy to implement.</p>
+        <p>Client libraries allow easy instrumentation of services. Over ten languages are supported already and custom libraries are easy to implement.</p>
       </a>
     </div>
     <div class="col-md-3 col-sm-6 col-xs-12 feature-item">