Susy and Breakpoint in Gulp-compass: Error: Cannot load such file --susy
<p>I encountered an issue when I try to use Susy and Breakpoint to my Gulp-compass. Is there anything I've missed in this code?</p>

<pre><code>var compass = require('gulp-compass'),
    autoprefixer = require('gulp-autoprefixer');
        gulp.task('compass', function(){
            gulp.src('scss/style.scss')
                .pipe(compass({
                    config_file: './config.rb',
                    css: 'css',
                    sass: 'scss',
                    require: ['susy', 'breakpoint']
                }))
                .pipe(autoprefixer({
                    browsers: ['last 2 versions'],
                    cascade: false
                }))
                .pipe(gulp.dest('css'));
        });
</code></pre>

<p>Error Message: </p>

<pre><code> bash-4.3$ gulp
[22:43:43] Using gulpfile ~\Desktop\Code Demo\Templates\angular\gulpfile.js
[22:43:43] Starting 'scripts'...
[22:43:43] Finished 'scripts' after 9.72 ms
[22:43:43] Starting 'compass'...
[22:43:43] Finished 'compass' after 3.09 ms
[22:43:43] Starting 'default'...
[22:43:43] Finished 'default' after 2.88 μs
[22:43:47] LoadError on line ["54"] of C: cannot load such file -- susy
Run with --trace to see the full backtrace


events.js:141
      throw er; //Unhandled 'error' event
      ^
 Error: Compass failed
</code></pre>