title: Task "default" is not in your gulpfile
body: <p>I run gulp in my console I got this error:</p>
  
  <blockquote>
    <p>Task 'default' is not in your gulpfile</p>
  </blockquote>
  
  <p>My gulpfile looks just fine:</p>
  
  <pre><code>var gulp = require('gulp'),
      LiveServer = require('gulp-live-server'),
      browserSync = require('browser-sync');
  
  gulp.task('live-server', function () {
      var server = new LiveServer('server/main.js');
      server.start();
  });
  
  gulp.task('serve', ['live-server'], function () {
      browserSync.init(null, {
          proxy: "http://localhost:3000",
          port: 9001
      });
  });
  </code></pre>