title: nuget modify text content file at installation
body: <p>I'm writing a nuget package which deploys some content files. </p>
  
  <p>I'd like them to be modified to contain the version number and install path. </p>
  
  <p>I found <a href="https://docs.nuget.org/create/configuration-file-and-source-code-transformations" rel="nofollow">this</a> but it appears to modify only config and source files. </p>
  
  <p>I noticed <a href="https://docs.nuget.org/create/creating-and-publishing-a-package#automatically-running-powershell-scripts-during-package-installation-and-removal" rel="nofollow">install.ps1</a> scripts, but they look only able to transform the target project and it's elements. </p>
  
  <p>What if I want to add a text file to the project:</p>
  
  <pre><code>You just installed package $packageName version $version in $installPath
  </code></pre>
  
  <p>transformed after installation in </p>
  
  <pre><code>You just installed package myPackage version 1.0.12.12 in packages/myPackage-1.0.12.12
  </code></pre>