diff --git a/java/.gitignore b/java/.gitignore
index 4e30541..a2da9ef 100644
--- a/java/.gitignore
+++ b/java/.gitignore
@@ -1,7 +1,6 @@
 # Created by https://www.gitignore.io
 
 ### Gradle ###
-.gradle
 build/
 
 # Ignore Gradle GUI config
diff --git a/java/.gradle/2.3/taskArtifacts/cache.properties b/java/.gradle/2.3/taskArtifacts/cache.properties
new file mode 100644
index 0000000..a43eb19
--- /dev/null
+++ b/java/.gradle/2.3/taskArtifacts/cache.properties
@@ -0,0 +1 @@
+#Wed Apr 29 19:04:22 UTC 2015
diff --git a/java/.gradle/2.3/taskArtifacts/cache.properties.lock b/java/.gradle/2.3/taskArtifacts/cache.properties.lock
new file mode 100644
index 0000000..99ba9f7
Binary files /dev/null and b/java/.gradle/2.3/taskArtifacts/cache.properties.lock differ
diff --git a/java/.gradle/2.3/taskArtifacts/fileHashes.bin b/java/.gradle/2.3/taskArtifacts/fileHashes.bin
new file mode 100644
index 0000000..1d5642d
Binary files /dev/null and b/java/.gradle/2.3/taskArtifacts/fileHashes.bin differ
diff --git a/java/.gradle/2.3/taskArtifacts/fileSnapshots.bin b/java/.gradle/2.3/taskArtifacts/fileSnapshots.bin
new file mode 100644
index 0000000..3a67265
Binary files /dev/null and b/java/.gradle/2.3/taskArtifacts/fileSnapshots.bin differ
diff --git a/java/.gradle/2.3/taskArtifacts/outputFileStates.bin b/java/.gradle/2.3/taskArtifacts/outputFileStates.bin
new file mode 100644
index 0000000..f3996c6
Binary files /dev/null and b/java/.gradle/2.3/taskArtifacts/outputFileStates.bin differ
diff --git a/java/.gradle/2.3/taskArtifacts/taskArtifacts.bin b/java/.gradle/2.3/taskArtifacts/taskArtifacts.bin
new file mode 100644
index 0000000..f5a0d66
Binary files /dev/null and b/java/.gradle/2.3/taskArtifacts/taskArtifacts.bin differ
diff --git a/java/gradle/wrapper/gradle-wrapper.properties b/java/gradle/wrapper/gradle-wrapper.properties
index 1793be4..8c4eeaa 100644
--- a/java/gradle/wrapper/gradle-wrapper.properties
+++ b/java/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Thu Nov 06 16:36:42 EST 2014
+#Wed Apr 29 19:04:22 UTC 2015
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-2.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-2.3-bin.zip