title: gulp-sass not compiling sass files
body: <p>I'm actually trying to build a gulp planning to do web related stuff, like compile sass, minify css, uglify javascript and so on. But I'm really having troubles with sass.</p>
  
  <p>Here's a sample of my code : </p>
  
  <pre><code>gulp.task('compile-sass', function() {
      gulp.src(buildType+config.path.sass+"/main.sass")
          .pipe(compass({
              css: 'css',
              sass: 'sass'
          }))
      .pipe(gulp.dest(buildType+config.path.css+"/test"));
  });
  </code></pre>
  
  <p>So I'm using compass here because i only have *.sass files and no .scss so gulp-sass wouldn't work for me. Therefore, I'm asking if anyone could give me a hint of why this task doesn't work. Here's what my console returns :</p>
  
  <pre><code>[gulp] Starting 'compile-sass'...
  [gulp] Finished 'compile-sass' after 6.11 ms
  [gulp] You must compile individual stylesheets from the project directory.
  
  
  events.js:72
      throw er; // Unhandled 'error' event
            ^
  [gulp] Error in plugin 'gulp-compass': Compass failed
  at Transform.&lt;anonymous&gt; (/Users/myusername/node_modules/gulp-compass/index.js:37:28)
  at ChildProcess.&lt;anonymous&gt; (/Users/myusername/node_modules/gulp-compass/lib/compass.js:136:7)
  at ChildProcess.EventEmitter.emit (events.js:98:17)
  at maybeClose (child_process.js:753:16)
  at Socket.&lt;anonymous&gt; (child_process.js:966:11)
  at Socket.EventEmitter.emit (events.js:95:17)
  at Pipe.close (net.js:465:12)
  </code></pre>
  
  <p>I know I'm not using any config.rb, but two things :
  1) I found no example of such files
  2) gulp-compass doc gives example without such a file so I assume it's optional</p>
  
  <p>Thanks in advance.</p>