Add composer package definition

Author: na2axl

composer.json

@@ -0,0 +1,28 @@
+{
+  "name": "na2axl/opendb",
+  "description": "The lightweight PHP ORM",
+  "type": "library",
+  "require-dev": {
+    "phpunit/phpunit": "^7"
+  },
+  "license": "MIT",
+  "authors": [
+    {
+      "name": "Axel Nana",
+      "email": "ax.lnana@outlook.com"
+    }
+  ],
+  "require": {
+    "php": "^7.1.10"
+  },
+  "keywords": [
+    "orm",
+    "database",
+    "pdo"
+  ],
+  "autoload": {
+    "psr-4": {
+      "OpenDB\\": "src/"
+    }
+  }
+}