title: grunt-contrib-sass: incompatible character encodings: UTF-8 and CP850
body: <p>While trying to use grunt to convert my sass files into normal css files i get the warning: </p>
  
  <pre><code>Warning: Encoding::CompabilityError: incompatible character encodings: UTF-8 and CP850.
  </code></pre>
  
  <p>However when I run sass calling the file(s) everything works as it should even though no encoding is specified by me. My <code>Gruntfile.js</code> looks like this:</p>
  
  <pre><code>[...]
  sass: {
      main: {
          files: {
              'css/theme/default.css': 'css/theme/source/default.scss',
                  'css/theme/beige.css': 'css/theme/source/beige.scss',
              'css/theme/night.css': 'css/theme/source/night.scss',
              'css/theme/serif.css': 'css/theme/source/serif.scss',
              'css/theme/simple.css': 'css/theme/source/simple.scss',
              'css/theme/sky.css': 'css/theme/source/sky.scss',
              'css/theme/moon.css': 'css/theme/source/moon.scss',
              'css/theme/solarized.css': 'css/theme/source/solarized.scss',
              }
          }
      }
  [...]
  </code></pre>
  
  <p>which is a part of the <a href="https://github.com/hakimel/reveal.js/blob/master/Gruntfile.js" rel="nofollow"><code>Gruntfile.js</code></a> I forked from the reveal.js on GitHub. I took a look at the <a href="https://github.com/gruntjs/grunt-contrib-sass" rel="nofollow">grunt-contrib-sass</a> on GitHub and tried to find the option to change the encoding manualy. However it apears that there is none (maybe I just overlooked it?).
  I think a keypart of the problem is that I am using Windows 8 and not any Unix based OS.</p>
  
  <p>So my question is:
  How do i get rid of this warning? Or how do i fix the code to work properly?
  Any help is appreciated.</p>