Added mutation test score as a badge in README.md

Author: Ocramius

README.md

@@ -1,6 +1,7 @@
 # roave/you-are-using-it-wrong
 
-[![Build Status](https://travis-ci.org/Roave/you-are-using-it-wrong.svg?branch=master)](https://travis-ci.org/Roave/you-are-using-it-wrong)
+[![Mutation testing badge](https://img.shields.io/endpoint?style=flat&url=https%3A%2F%2Fbadge-api.stryker-mutator.io%2Fgithub.com%2Froave%2Fyou-are-using-it-wrong)](https://dashboard.stryker-mutator.io/reports/github.com/roave/you-are-using-it-wrong/master)
+[![Type Coverage](https://shepherd.dev/github/roave/you-are-using-it-wrong/coverage.svg)](https://shepherd.dev/github/roave/you-are-using-it-wrong)
 [![Packagist](https://img.shields.io/packagist/v/roave/you-are-using-it-wrong.svg)](https://packagist.org/packages/roave/you-are-using-it-wrong)
 
 This package enforces type checks during composer installation in downstream

infection.json.dist

@@ -1,14 +1,15 @@
 {
-    "timeout": 10,
     "source": {
         "directories": [
             "src"
         ]
     },
-    "mutators": {
-        "@default": true
-    },
     "logs": {
-        "text": "infection-log.txt"
-    }
+        "text": "php://stderr",
+        "badge": {
+            "branch": "master"
+        }
+    },
+    "minMsi": 84,
+    "minCoveredMsi": 100
 }