Update project files

build.gradle

@@ -1,16 +1,20 @@
 buildscript {
     repositories {
+        google()
         jcenter()
+        maven { url 'https://maven.fabric.io/public' }
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.3.3'
-        classpath 'com.google.gms:google-services:3.1.0'
+        classpath 'com.android.tools.build:gradle:3.0.1'
+        classpath 'com.google.gms:google-services:3.1.1'
+        classpath 'io.fabric.tools:gradle:1.25.1'
     }
 }
 
 allprojects {
     repositories {
-        jcenter()
         google()
+        jcenter()
+        maven { url 'https://maven.fabric.io/public' }
     }
 }