detect if app is running in production

If app is running in “production” (i.e. it has been packaged), then it
will be invoked with one less argument.

WebTorrent.exe arguments

vs.

electron.exe /path/to/app arguments

We need to detect this to correctly handle command line arguments.

main/index.js

@@ -2,13 +2,14 @@ var electron = require('electron')
 
 var app = electron.app
 
+var config = require('../config')
 var ipc = require('./ipc')
 var menu = require('./menu')
+var registerProtocolHandler = require('./register-protocol-handler')
 var shortcuts = require('./shortcuts')
 var windows = require('./windows')
-var registerProtocolHandler = require('./register-protocol-handler')
 
-var argv = process.argv.slice(2)
+var argv = process.argv.slice(config.IS_PRODUCTION ? 1 : 2)
 
 app.on('open-file', onOpen)
 app.on('open-url', onOpen)
@@ -24,8 +25,9 @@ app.on('ready', function () {
 })
 
 app.on('ipcReady', function () {
+  windows.main.send('log', 'IS_PRODUCTION:', config.IS_PRODUCTION)
   if (argv.length) {
-    windows.main.send('log', 'command line args:', argv)
+    windows.main.send('log', 'command line args:', process.argv)
   }
   argv.forEach(function (torrentId) {
     windows.main.send('dispatch', 'onOpen', torrentId)