update gradle and dependencies

app/build.gradle

@@ -20,26 +20,26 @@ android {
 }
 
 dependencies {
-    compile fileTree(dir: 'libs', include: ['*.jar'])
-    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
+    implementation fileTree(dir: 'libs', include: ['*.jar'])
+    androidTestImplementation('com.android.support.test.espresso:espresso-core:2.2.2', {
         exclude group: 'com.android.support', module: 'support-annotations'
     })
-    compile "com.android.support:appcompat-v7:$rootProject.androidSupport"
-    compile "com.android.support:recyclerview-v7:$rootProject.androidSupport"
-    compile "com.android.support:cardview-v7:$rootProject.androidSupport"
-    compile "com.android.support:design:$rootProject.androidSupport"
-    testCompile 'junit:junit:4.12'
-    compile 'com.android.support.constraint:constraint-layout:1.0.2'
-    compile 'com.google.android.instantapps:instantapps:1.0.0'
+    implementation "com.android.support:appcompat-v7:$rootProject.androidSupport"
+    implementation "com.android.support:recyclerview-v7:$rootProject.androidSupport"
+    implementation "com.android.support:cardview-v7:$rootProject.androidSupport"
+    implementation "com.android.support:design:$rootProject.androidSupport"
+    testImplementation 'junit:junit:4.12'
+    implementation 'com.android.support.constraint:constraint-layout:1.1.0'
+    implementation 'com.google.android.instantapps:instantapps:1.1.0'
 
-    compile 'io.reactivex.rxjava2:rxandroid:2.0.1'
-    compile 'io.reactivex.rxjava2:rxjava:2.1.0'
+    implementation 'io.reactivex.rxjava2:rxandroid:2.0.1'
+    implementation 'io.reactivex.rxjava2:rxjava:2.1.6'
 
-    compile 'com.google.code.gson:gson:2.8.1'
+    implementation 'com.google.code.gson:gson:2.8.1'
 
-    compile 'commons-io:commons-io:2.5'
+    implementation 'commons-io:commons-io:2.5'
 
-    compile 'com.jakewharton:butterknife:8.6.0'
+    implementation 'com.jakewharton:butterknife:8.6.0'
     annotationProcessor 'com.jakewharton:butterknife-compiler:8.6.0'
 
 }

build.gradle

@@ -5,9 +5,10 @@ buildscript {
     repositories {
         maven { url 'https://maven.google.com' }
         jcenter()
+        google()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.0-alpha8'
+        classpath 'com.android.tools.build:gradle:3.1.1'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
@@ -22,11 +23,11 @@ allprojects {
 }
 
 ext {
-    minSdkVersion = 23
-    targetSdkVersion = 26
-    compileSdkVersion = 25
-    buildToolsVersion = '25.0.3'
-    androidSupport = '25.3.1'
+    minSdkVersion = 21
+    targetSdkVersion = 27
+    compileSdkVersion = 27
+    buildToolsVersion = '27.0.3'
+    androidSupport = '27.1.1'
 
 }
 

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
-#Fri Jun 09 14:36:39 CEST 2017
+#Tue May 29 13:46:56 CEST 2018
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-milestone-1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip