title: No packages were pushed - Appveyor Nuget feed
body: <p>this is my yml file:</p>
  
  <pre><code>deploy:
    - provider: NuGet
      symbol_server: https://ci.appveyor.com/nuget/xxxxx/api/v2/package
      api_key:
      secure: xxxxxxxxxxxxxxxxxxxxxxxx
      artifact: DataParser.1.0.0.nupkg
  </code></pre>
  
  <p>The nupkg file is located in the root of the solution (same directory of the .sln file)</p>
  
  <p>However I get a warning on Appveyor:</p>
  
  <blockquote>
    <p>no packages were pushed</p>
  </blockquote>