Move to 2.0

Change-Id: I66063e3992bfbce11e3715c2caedb1244770c6c1
diff --git a/wrapper/gradle-wrapper.properties b/wrapper/gradle-wrapper.properties
index 3bb83c3..99dcde4 100644
--- a/wrapper/gradle-wrapper.properties
+++ b/wrapper/gradle-wrapper.properties
@@ -3,4 +3,4 @@
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=../../external/gradle/gradle-1.12-bin.zip
+distributionUrl=../../external/gradle/gradle-2.0-bin.zip