title: Can't add gms play services 9.0.1, google-services plugin wants 9.0.0
body: <p>I have this in my top-level build.gradle:</p>
  
  <pre><code>buildscript {
      repositories {
          jcenter()
      }
      dependencies {
          classpath 'com.google.gms:google-services:3.0.0'
      }
  }
  allprojects {
      repositories {
          jcenter()
      }
  }
  </code></pre>
  
  <p>And in my app-level gradle:</p>
  
  <pre><code>apply plugin: 'com.google.gms.google-services'
  
  dependencies {
      compile 'com.google.android.gms:play-services-ads:9.0.1'
  }
  </code></pre>
  
  <p>And I get this error when sync-ing gradle:</p>
  
  <blockquote>
    <p>Please fix the version conflict either by updating the version of the
    google-services plugin […] or updating the version of
    com.google.android.gms to 9.0.0.</p>
  </blockquote>
  
  <p>Yet I'm already using 9.0.1, I don't get it.</p>