Merge pull request #2 from mediact/feature/composer-2-compatibility

Allow both major versions of composer

Author: ashokadewit

composer.json

@@ -21,7 +21,7 @@
     "prefer-stable": true,
     "require": {
         "php": "^7.0",
-        "composer/composer": "<2.0.0"
+        "composer/composer": "^1.0 || ^2.0"
     },
     "require-dev": {
         "phpunit/phpunit": "@stable",