[add] 設定env

src/electron/index.html

@@ -19,6 +19,7 @@
 		<input type="number" id="port" value="8080">
 		<button id="startBtn">啟動</button>
 		<button id="stopBtn">關閉</button>
+		<button id="jsonReload">重載Json</button>
 		<button id="devToolsBtn">DevTools</button>
 		<p id="status">Status: Waiting for actions...</p>
 	</div>