Node.js and Webstorm - using 'npm start'

I am using the WebStorm IDE for Node.js and am on Windows 7.

I got a great answer on here about how to configure my package.json file to support nodemon in development and node in production like so:

{
  "name": "ExpressNodeUpAndRunning",
  "version": "0.0.1",
  "private": true,
  "scripts": {
      "start": "if [$NODE_ENV == 'production']; then node main.js; else nodemon main.js; fi",
      "test": "mocha --reporter spec test"
  },
  "dependencies": {
    "request": "*"
  }
}

the problem is that if/else script appears to be a UNIX/Mac script, and I am on a Windows development box. This script will have to work on Windows and on Unix since the production servers I will use will be Unix.

so a work-around would be:

{
  "name": "Node_Sports_Lineup",
  "version": "0.0.1",
  "private": true,
  "scripts": {
    "start": "node main.js",
    "start_dev": "nodemon main.js",
    "test": "mocha tests"
  },
  "dependencies": {
    ...
}

So I need to run "npm start_dev" instead of "npm start". But how do I do that with WebStorm?