title: How to install Roslyn (for use in source-code-modification)?
body: <p>I don't want to install the compiler - as far as I know it's already installed. (I'm using Visual Studio 2015).</p>
  
  <p>I don't want the source code. I just want to be able to do some simple code changing like <a href="https://stackoverflow.com/questions/23227644/how-do-i-replace-a-string-variable-with-a-var-in-roslyn">this question</a> asks about.</p>
  
  <p>What I've found is mainly <a href="https://github.com/dotnet/roslyn" rel="nofollow noreferrer">github</a> which doesn't seem clear. And other sources seem to be quite outdated. Is there something there that I'm overlooking? </p>
  
  <p>So - How do I get the tools I need for source-code-modifying using Roslyn?</p>