title: Could not find com.android.tools.build.gradle:3.0.0-alpha7
body: <p>I update the gradle plugin to the latest, and i'm getting this error:</p>
  
  <pre><code>Error:Could not find com.android.tools.build.gradle:3.0.0-alpha7:.
  Searched in the following locations:
      file:/C:/Users/dmin/Documents/android-studio/gradle/m2repository/com/android/tools/build/gradle/3.0.0-alpha7//3.0.0-alpha7-.pom
      file:/C:/Users/dmin/Documents/android-studio/gradle/m2repository/com/android/tools/build/gradle/3.0.0-alpha7//3.0.0-alpha7-.jar
      https://jcenter.bintray.com/com/android/tools/build/gradle/3.0.0-alpha7//3.0.0-alpha7-.pom
      https://jcenter.bintray.com/com/android/tools/build/gradle/3.0.0-alpha7//3.0.0-alpha7-.jar
      https://maven.google.com/com/android/tools/build/gradle/3.0.0-alpha7//3.0.0-alpha7-.pom
      https://maven.google.com/com/android/tools/build/gradle/3.0.0-alpha7//3.0.0-alpha7-.jar
  </code></pre>
  
  <p>Here's my build.gradle</p>
  
  <pre><code>buildscript {
      repositories {
          jcenter()
          maven { url 'https://maven.google.com' }
      }
      dependencies {
          classpath 'com.android.tools.build.gradle:3.0.0-alpha7'
          classpath 'com.google.gms:google-services:3.1.0'
      }
  }
  
  allprojects {
      repositories {
          jcenter()
      }
  }
  </code></pre>
  
  <p>Where i'm getting wrong? since i modified my gradle.build according to the question <a href="https://stackoverflow.com/questions/44071080/could-not-find-com-android-tools-buildgradle3-0-0-alpha1-in-circle-ci">Could not find com.android.tools.build:gradle:3.0.0-alpha1 in circle ci</a>
   thank you!!</p>
  
  <p>-- Updated the build.gradle according to Mr Tim, but i'm still having the same error</p>
  
  <pre><code>buildscript {
      repositories {
          jcenter()
          google()
      }
      dependencies {
          classpath 'com.android.tools.build.gradle:3.0.0-alpha7'
          classpath 'com.google.gms:google-services:3.1.0'
      }
  }
  
  allprojects {
      repositories {
          jcenter()
      }
  }
  </code></pre>