title: Getting Exception java.lang.NoClassDefFoundError: com.google.firebase.FirebaseOptions after updating to the new firebase
body: <p>I have updated my application to the new firebase using the <a href="https://firebase.google.com/docs/android/setup#available_libraries" rel="noreferrer">this</a> and now when i compile my project i get the following exception.</p>
  
  <p>Here is my <strong>logcat:</strong></p>
  
  <pre><code>11:57:54.533 27844-27844/com.example.dayshift_2.traveyy E/AndroidRuntime: FATAL EXCEPTION: main
  Process: com.example.dayshift_2.traveyy, PID: 27844
  java.lang.NoClassDefFoundError: com.google.firebase.FirebaseOptions
  at com.google.firebase.FirebaseApp.zzbu(Unknown Source)
  at com.google.firebase.provider.FirebaseInitProvider.onCreate(Unknown Source)
  at android.content.ContentProvider.attachInfo(ContentProvider.java:1591)
  at android.content.ContentProvider.attachInfo(ContentProvider.java:1562)
  at com.google.firebase.provider.FirebaseInitProvider.attachInfo(Unknown Source)
  at android.app.ActivityThread.installProvider(ActivityThread.java:4871)
  at android.app.ActivityThread.installContentProviders(ActivityThread.java:4466)
  at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4406)
  at android.app.ActivityThread.access$1500(ActivityThread.java:139)
  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1270)
  at android.os.Handler.dispatchMessage(Handler.java:102)
  at android.os.Looper.loop(Looper.java:136)
  at android.app.ActivityThread.main(ActivityThread.java:5102)
  at java.lang.reflect.Method.invokeNative(Native Method)
  at java.lang.reflect.Method.invoke(Method.java:515)
  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
  at dalvik.system.NativeStart.main(Native Method)
  </code></pre>
  
  <p>My <strong>Build.gradle :</strong></p>
  
  <pre><code>apply plugin: 'com.android.application'
  
  android {
  compileSdkVersion 23
  buildToolsVersion "23.0.3"
  
  defaultConfig {
      applicationId "com.example.dayshift_2.traveyy"
      minSdkVersion 15
      targetSdkVersion 23
      versionCode 1
      versionName "1.0"
      multiDexEnabled true
  }
  buildTypes {
      release {
          minifyEnabled false
          proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
      }
  }
  packagingOptions {
      exclude 'META-INF/LICENSE'
      exclude 'META-INF/LICENSE-FIREBASE.txt'
      exclude 'META-INF/NOTICE'
  }
  }
  
  dependencies {
  compile fileTree(dir: 'libs', include: ['*.jar'])
  testCompile 'junit:junit:4.12'
  
  compile 'com.android.support:appcompat-v7:23.3.0'
  compile 'com.android.support:design:23.3.0'
  compile 'com.facebook.android:facebook-android-sdk:4.+'
  compile 'com.google.android.gms:play-services:9.0.0'
  compile 'com.google.firebase:firebase-database:9.0.0'
  compile 'com.google.firebase:firebase-auth:9.0.0'
  compile 'com.android.support:support-v13:23.3.0'
  compile 'com.roughike:bottom-bar:1.2.1'
  }
  
  
  apply plugin: 'com.google.gms.google-services'
  </code></pre>
  
  <p>Not sure where i am getting this exception from. any help will be highly appreciated. 
  Thank you</p>