title: Remove unused modules/components from Semantic UI build
body: <p>after searching for a long time, I didn't find any solution that fits to current Semantic UI 2.0.</p>
  
  <p>Question is: How to I remove unused components and modules from my JS/CSS build? Im using about 1/4 of all features, is there any easy way to reduce the file size? The way to add/remove items from semantic.json doesn't work anymore it seems.</p>
  
  <p>Thanks,
  H.G.</p>