Fix websocket env variable

Author: cnasikas

.env-template

@@ -1,2 +1,3 @@
 REACT_APP_API_URL=http://localhost:3000/api
+REACT_APP_WS=ws://localhost:3000
 PORT=3001

src/actions/websocket.js

@@ -1,6 +1,6 @@
 import types from './actionTypes'
 
-const URI = process.env.WEBSOCKET_URL || 'ws://localhost:3000'
+const URI = process.env.REACT_APP_WS || 'ws://localhost:3000'
 
 const webSocket = new WebSocket(URI);