title: Run mocha excluding paths
body: <p>I have this (in gulpfile.js):</p>
  
  <pre><code>var gulp = require("gulp");
  var mocha = require("gulp-mocha");
  gulp.task("test", function() {
      gulp
          .src(["./**/*_test.js", "!./node_modules/**/*.js"]);
  });
  </code></pre>
  
  <p>and it works.</p>
  
  <p>I want to replicate the same behavior, <strong>excluding "node_modules" folder</strong>, from mocha command, running <em>npm test</em> (in package.json):</p>
  
  <pre><code>"scripts": {
      "test": "mocha **\\*_test.js !./node_modules/**/*.js*",
  }
  </code></pre>
  
  <p>and it doesn't work.</p>
  
  <p>I'm using Windows.</p>
  
  <p>Any suggestion?</p>