Merge pull request #622 from friederbluemle/update-gradle-wrapper

Update Gradle wrapper to 3.4.1

Author: samtstern

gradle/wrapper/gradle-wrapper.jar

@@ -1,6 +1,6 @@
-#Tue Feb 21 17:40:47 PST 2017
+#Sat Mar 04 16:24:17 SGT 2017
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-3.4-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-3.4.1-all.zip