Make it installable with vendor folder usage

composer.json

@@ -1,25 +1,36 @@
 {
-	"name": "silverstripe/versionfeed",
-	"description": "Adds RSS feeds of content changes to SilverStripe",
-	"type": "silverstripe-module",
-	"keywords": ["silverstripe", "rss", "feed", "cwp"],
-	"license": "BSD-3-Clause",
-	"authors": [
-		{
-			"name": "Robert Curry",
-			"email": "robert@silverstripe.com"
-		}
-	],
-	"require":
-	{
-		"silverstripe/framework": "^3.1",
-		"silverstripe/cms": "^3.1"
-	},
-	"extra": 
-	{
-		"branch-alias": 
-		{
-			"dev-master": "1.3.x-dev"
-		}
-	}
+    "name": "silverstripe/versionfeed",
+    "description": "Adds RSS feeds of content changes to SilverStripe",
+    "type": "silverstripe-vendormodule",
+    "keywords": ["silverstripe", "rss", "feed", "cwp"],
+    "license": "BSD-3-Clause",
+    "authors": [
+        {
+            "name": "Robert Curry",
+            "email": "robert@silverstripe.com"
+        }
+    ],
+    "require":
+    {
+        "silverstripe/recipe-cms": "^1"
+    },
+    "require-dev": {
+        "phpunit/phpunit": "^5.7",
+        "squizlabs/php_codesniffer": "^3.0"
+    },
+    "autoload": {
+        "psr-4": {
+            "SilverStripe\\VersionFeed\\": "src/",
+            "SilverStripe\\VersionFeed\\Tests\\": "tests/"
+        }
+    },
+    "extra": 
+    {
+        "branch-alias": 
+        {
+            "dev-master": "2.x-dev"
+        }
+    },
+    "minimum-stability": "dev",
+    "prefer-stable": true
 }