title: Could not find method ndk() for arguments
body: <p>I'm following <a href="https://codelabs.developers.google.com/codelabs/android-studio-jni/index.html?index=..%2F..%2Findex#3" rel="noreferrer">Create Hello-JNI With Android Studio</a>.</p>
  
  <p>MAC OX 10.11.5</p>
  
  <p>Android Studio 2.2 stable</p>
  
  <p>java version: 1.7.0_79</p>
  
  <p>gradle-2.14.1</p>
  
  <p>Here's my app.gradle:</p>
  
  <pre><code>apply plugin: 'com.android.application'
  
  android {
      compileSdkVersion 23
      buildToolsVersion "23.0.1"
      defaultConfig {
          applicationId "com.chenql.helloandroidjni"
          minSdkVersion 14
          targetSdkVersion 23
          versionCode 1
          versionName "1.0"
          testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
      }
      buildTypes {
          release {
              minifyEnabled false
              proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
          }
      }
      ndk {
          moduleName "hello-android-jni"
      }
  }
  
  dependencies {
      compile fileTree(dir: 'libs', include: ['*.jar'])
      androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
          exclude group: 'com.android.support', module: 'support-annotations'
      })
      compile 'com.android.support:appcompat-v7:23.3.0'
      compile 'com.android.support:design:23.3.0'
      testCompile 'junit:junit:4.12'
  }
  </code></pre>
  
  <p>Here's the error:
  <a href="https://i.stack.imgur.com/kBvXi.png" rel="noreferrer">The Error Message</a></p>
  
  <pre><code>Error:(20, 0) Could not find method ndk() for arguments [build_13jh6qtzl4f08f8c1of3mvsys$_run_closure1$_closure5@5b127949] on project ':app' of type org.gradle.api.Project.
  </code></pre>
  
  <p>Open File</p>