feat(core): use gradle dist with sources

Author: kucharzyk

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
-#Fri Jul 07 22:38:36 CEST 2017
+#Sun Jul 09 21:42:13 CEST 2017
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.0.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.0.1-all.zip