Update php version

Daniel Opitz · Daniel Opitz · commit 8444f00ccad9 · 2018-04-28T19:13:14.000+02:00
diff --git a/README.md b/README.md
@@ -9,7 +9,7 @@
 
 ## Requirements
 
-* PHP 7.1+
+* PHP 7.0+
 
 ## Installation
 
diff --git a/composer.json b/composer.json
@@ -15,7 +15,7 @@
     }
   ],
   "require": {
-    "php": ">=7.1"
+    "php": ">=7.0"
   },
   "require-dev": {
     "phpunit/phpunit": "^6.0|^7.0"
