title: No lintable files found at paths SwiftLint
body: <p>I tried to install SwiftLint using CocoaPods and I add in Build phases the following script : </p>
  
  <pre><code>"${PODS_ROOT}/SwiftLint/swiftlint" 
  </code></pre>
  
  <p>SwiftLint is installed correctly and I get many errors and warnings in the project.</p>
  
  <p>Then, I create the swiftLint.yml file in which I modify some rules but they are not token into consideration and the same number of errors and warnings persist in Xcode project.</p>
  
  <p>When I run this command to confirm the application of the rules : </p>
  
  <pre><code>    ./swiftlint lint --config .swiftlint.yml       
  </code></pre>
  
  <p>I get the error :</p>
  
  <pre><code> No lintable files found at paths : ''
  </code></pre>
  
  <p>How can I solve this issue please?</p>