title: Visual Studio 2015 RC Typescript experimental decorators error
body: <p>How do I disable the following error in VS2015?</p>
  
  <p><strong>TS1219    Experimental support for decorators is a feature that is subject to change in a future release. Specify '--experimentalDecorators' to remove this warning.</strong>    </p>
  
  <p><img src="https://i.stack.imgur.com/lIFQl.png" alt="enter image description here"></p>
  
  <p>I'm trying to use Angular2 annotations. I tried adding the following manually to the project file with no luck:</p>
  
  <pre><code>&lt;TypeScriptExperimentalDecorators&gt;True&lt;/TypeScriptExperimentalDecorators&gt;
  </code></pre>
  
  <p>I've also install the TypeScript 1.5.0 beta extension.</p>