Updated AGP 3.x dependency & the Gradle wrapper

Author: mannodermaus

gradle.properties

@@ -13,7 +13,7 @@ VCS_URL                                     = https://github.com/aurae/android-j
 
 # Dependency versions (plugins)
 ANDROID_PLUGIN_VERSION_2X                   = 2.3.2
-ANDROID_PLUGIN_VERSION_3X                   = 3.0.0-alpha7
+ANDROID_PLUGIN_VERSION_3X                   = 3.0.0-alpha9
 BINTRAY_PLUGIN_VERSION                      = 1.7.3
 
 # Dependency versions

gradle/wrapper/gradle-wrapper.jar

@@ -1,6 +1,5 @@
-#Sun Jun 04 09:59:35 CEST 2017
 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-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-rc-1-bin.zip