Update built tools to latest

app/build.gradle

@@ -1,14 +1,14 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 25
+    compileSdkVersion 26
-    buildToolsVersion '25.0.2'
+    buildToolsVersion '26.0.1'
 
     defaultConfig {
-        minSdkVersion 3
+        minSdkVersion 14
-        targetSdkVersion 25
+        targetSdkVersion 26
-        versionCode 36
+        versionCode 37
-        versionName '4.3'
+        versionName '5.0'
     }
 
     lintOptions {
@@ -36,5 +36,5 @@ android {
 
 dependencies {
     testCompile 'junit:junit:4.12'
-    testCompile 'org.robolectric:robolectric:3.0'
+    testCompile 'org.robolectric:robolectric:3.4.2'
 }

build.gradle

@@ -3,6 +3,7 @@
 buildscript {
     repositories {
         jcenter()
+        google()
     }
     dependencies {
         classpath 'com.android.tools.build:gradle:2.3.2'

gradle/wrapper/gradle-wrapper.properties

@@ -2,4 +2,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-3.3-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip