upgrade dependencies and add kotlin

PermissionUtils/build.gradle

@@ -1,11 +1,14 @@
 apply plugin: 'com.android.library'
+apply plugin: 'kotlin-android'
+apply plugin: 'kotlin-android-extensions'
+
 android {
-    compileSdkVersion 25
-    buildToolsVersion '25.0.2'
+    compileSdkVersion 27
+    buildToolsVersion '27.0.2'
 
     defaultConfig {
         minSdkVersion 14
-        targetSdkVersion 25
+        targetSdkVersion 27
         versionCode 9
         versionName "1.0.9"
     }
@@ -24,7 +27,8 @@ tasks.withType(Javadoc) {
 
 dependencies {
     testCompile 'junit:junit:4.12'
-    compile 'com.android.support:appcompat-v7:25.3.1'
+    compile 'com.android.support:appcompat-v7:27.0.2'
+    compile "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
 }
 
 ext {
@@ -53,4 +57,7 @@ ext {
 
 // Place it at the end of the file
 apply from: 'https://raw.githubusercontent.com/kayvannj/JCenter/master/installv1.gradle'
-apply from: 'https://raw.githubusercontent.com/kayvannj/JCenter/master/bintrayv1.gradle'
+apply from: 'https://raw.githubusercontent.com/kayvannj/JCenter/master/bintrayv1.gradle'
+repositories {
+    mavenCentral()
+}

app/build.gradle

@@ -1,8 +1,9 @@
 apply plugin: 'com.android.application'
+apply plugin: 'kotlin-android'
 
 android {
     compileSdkVersion 25
-    buildToolsVersion "25.0.2"
+    buildToolsVersion '26.0.2'
 
     defaultConfig {
         applicationId "com.kayvan.permissionutil"
@@ -25,4 +26,8 @@ dependencies {
     compile 'com.jakewharton:butterknife:7.0.1'
     compile 'com.android.support:appcompat-v7:25.3.1'
     compile 'com.github.kayvannj:PermissionUtils:1.0.9'
+    compile "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+}
+repositories {
+    mavenCentral()
 }

build.gradle

@@ -1,20 +1,24 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 
 buildscript {
+    ext.kotlin_version = '1.2.20'
     repositories {
         jcenter()
         mavenCentral()
+        google()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.3.1'
+        classpath 'com.android.tools.build:gradle:3.0.1'
         classpath 'com.jfrog.bintray.gradle:gradle-bintray-plugin:1.7.3'
-        classpath 'com.github.dcendents:android-maven-gradle-plugin:1.4.1'
+        classpath 'com.github.dcendents:android-maven-gradle-plugin:1.5'
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
     }
 }
 
 allprojects {
     repositories {
         jcenter()
+        google()
     }
 }
 task clean(type: Delete) {

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
-#Fri Oct 07 16:07:32 PDT 2016
+#Thu Jan 18 20:37:00 PST 2018
 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