Update gradle wrapper to v2.4

Change-Id: I5fe40370342947c16eec8ee5474433d1f08123c3
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index c9a5de6..517394b 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -15,4 +15,4 @@
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-2.2.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-2.4-all.zip
diff --git a/templates/create/gradle/wrapper/gradle-wrapper.properties b/templates/create/gradle/wrapper/gradle-wrapper.properties
index afb3296..aa75ae6 100644
--- a/templates/create/gradle/wrapper/gradle-wrapper.properties
+++ b/templates/create/gradle/wrapper/gradle-wrapper.properties
@@ -3,4 +3,4 @@
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=http\://services.gradle.org/distributions/gradle-2.2.1-bin.zip
+distributionUrl=http\://services.gradle.org/distributions/gradle-2.4-all.zip