title: Unable to add Kotlin Android Extensions to my project
body: <p>When i try to add kotlin-android-extensions via:</p>
  
  <p><code>apply plugin: 'kotlin-android-extensions'</code></p>
  
  <p>to my project Android Studio tells me <em>Plugin with 'kotlin-android-extensions</em> not found??</p>
  
  <p>What is going wrong? I am Running Android Studio 3.0 Canary 8</p>