Add badge for PR/issue closing times

README.md

@@ -1,6 +1,8 @@
 # Welcome to [TechEmpower Framework Benchmarks (TFB)](http://www.techempower.com/benchmarks/) 
 [![Build Status](https://travis-ci.org/TechEmpower/FrameworkBenchmarks.svg?branch=master)](https://travis-ci.org/TechEmpower/FrameworkBenchmarks) 
 [![Documentation Status](https://readthedocs.org/projects/frameworkbenchmarks/badge/?version=latest)](https://readthedocs.org/projects/frameworkbenchmarks/?badge=latest)
+[![Issue Stats](http://www.issuestats.com/github/TechEmpower/FrameworkBenchmarks/badge/issue)](http://www.issuestats.com/github/TechEmpower/FrameworkBenchmarks)
+[![Issue Stats](http://www.issuestats.com/github/TechEmpower/FrameworkBenchmarks/badge/pr)](http://www.issuestats.com/github/TechEmpower/FrameworkBenchmarks)
 
 This project provides representative performance measures across a wide field of web 
 application frameworks. With much help from the community, coverage is quite broad and