Adding composer and dependency slim

composer.json

@@ -0,0 +1,12 @@
+{
+	"repositories": [
+		{
+			"type": "vcs",
+			"url": "https://github.com/adeptoas/slim3-init"
+		}
+	],
+
+	"require": {
+		"adeptoas/slim3-init": "^1.0.0"
+	}
+}