Merge pull request #42 from transkontrol/master

Update require php version in composer.json

Author: xgin

composer.json

@@ -10,7 +10,7 @@
     ],
     "minimum-stability": "dev",
     "require": {
-        "php": "^5.6|^7.1"
+        "php": "^5.6|^7.1|^7.0"
     },
     "require-dev": {
         "phpunit/phpunit": "^7"