Updating Fabric for Android to latest version

Author: sarriaroman

src/android/build-extras.gradle

@@ -1,6 +1,16 @@
 
 def packageName = getPackageName()
 
+buildscript {
+  repositories {
+    maven { url 'https://maven.fabric.io/public' }
+  }
+
+  dependencies {
+    classpath 'io.fabric.tools:gradle:1.+'
+  }
+}
+
 android {
     defaultConfig {
         applicationId packageName
@@ -12,7 +22,9 @@ repositories {
 }
 
 dependencies {
-    compile 'com.crashlytics.sdk.android:crashlytics:2.5.5'
+  compile('com.crashlytics.sdk.android:crashlytics:2.6.6@aar') {
+    transitive = true;
+  }
 }
 
 def getPackageName() {