title: Cannot find module 'gulp-watch' error throws
body: <p>Error <strong>Cannot find module 'gulp-watch'</strong> throws when I run gulp. What is wrong???</p>
  
  <p>I installed gulp properly</p>
  
  <pre><code>npm rm --global gulp
  npm install --global gulp-cli
  npm init 
  npm install --save-dev gulp
  </code></pre>
  
  <p>I created this gulpfile.js</p>
  
  <pre><code>var gulp = require('gulp'), watch = require('gulp-watch');
  var cssnano = require('gulp-cssnano');
  var pump = require('pump');
  var uglify = require('gulp-uglify');
  var sass = require('gulp-sass');
  // var htmlmin = require('gulp-htmlmin');
  
  //Watch
  gulp.task('stream', function () {
      // Endless stream mode 
      // gulp.watch('./css/*.scss', ['minifyHTML']);
      gulp.watch( 'assets/css/*.scss', ['styles']);
      gulp.watch( 'assets/js/*.js', ['scripts']);
      return watch('./css', { ignoreInitial: false })
          .pipe(gulp.dest('.'));
  });
  
  //bla bla (the rest)
  </code></pre>