title: Import .targets file from command line in msbuild
body: <p>I currently have multiple projects being build using msbuild.  I have a small customisation to the build that is handled by a .targets file.  One solution is to add the snippet </p>
  
  <pre><code>&lt;Import Project="MyTargets.targets"/&gt;
  </code></pre>
  
  <p>to each project file.  However, ideally I would like to not touch the project files, and be able to pass this information as a parameter to msbuild.  That way I could easily control whether I run this customisation from the command line, <em>and</em> I don't have to touch the existing project files.</p>
  
  <p>Is this possible?</p>