added manifests

- should be installable on Chromium for now

chrome.js

@@ -0,0 +1,8 @@
+chrome.app.runtime.onLaunched.addListener(function() {
+	chrome.app.window.create('index.html', {
+		'outerBounds': {
+			'width': 500,
+			'height': 500
+		}
+	});
+});

manifest.json

@@ -0,0 +1,11 @@
+{
+	"name": "RollDice",
+	"description": "Chinese dice game",
+	"version": "0.1",
+	"manifest_version": 3,
+	"app": {
+		"background": {
+			"scripts": ["chrome.js"]
+		}
+	}
+}