title: Lint error on Okio
body: <p>I started getting this errors about </p>
  
  <pre><code>**InvalidPackage: Package not included in Android**
  
  ../../../../../../../.gradle/caches/modules-2/files-2.1/com.squareup.okio/okio/1.6.0/98476622f10715998eacf9240d6b479f12c66143/okio-1.6.0.jar: Invalid package reference in library; not included in **Android: java.nio.file**. Referenced from **okio.Okio**.
  </code></pre>
  
  <p>I am using:</p>
  
  <pre><code>  compile 'com.squareup.okhttp:okhttp:2.5.0'
  </code></pre>
  
  <p>I did some reading on the same at following links: </p>
  
  <p><a href="https://github.com/square/okio/issues/58">https://github.com/square/okio/issues/58</a></p>
  
  <p><a href="https://github.com/square/okhttp/issues/896">https://github.com/square/okhttp/issues/896</a></p>
  
  <p>I have 2 questions for the same </p>
  
  <p><strong>Question 1 ::</strong> What change could have introduce this error ?
      The code was compiling Okay previously, I don't think upgrading Gradle to 2.10/2.11 or upgrading Android studio 2.0 beta 4/ AS 2.0 beta 5 could have introduced this error. As i tried to revert everything back. But i was still getting same error!</p>
  
  <p><strong>Question 2 ::</strong> I don't wish to disable lint or add following quote in my app. What is the best way to stop this error from happening?</p>
  
  <pre><code>lintOptions {
      warning 'InvalidPackage'
  }
  </code></pre>