[Build] Adds a BUCK file and a Module.

So that we can build the jar for the plugin.
For the moment, it does nothing, but you can run :
buck build
 buck build plugins/automerge-plugin:automerge-plugin
and it will build the plugin in
./buck-out/gen/plugins/automerge-plugin/automerge-plugin.jar

BUCK

diff --git a/BUCK b/BUCK
new file mode 100644
index 0000000..657539f
--- /dev/null
+++ b/BUCK
@@ -0,0 +1,26 @@
+# Copyright 2014 Criteo
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+   
+include_defs('//bucklets/gerrit_plugin.bucklet')
+
+gerrit_plugin(
+  name = 'automerge-plugin',
+  srcs = glob(['src/main/java/**/*.java']),
+  manifest_entries = [
+    'Gerrit-PluginName: automerge',
+    'Gerrit-Module: com.criteo.gerrit.plugins.automerge.Module',
+    'Implementation-Title: Automerge plugin',
+    'Implementation-URL: https://github.com/criteo/automerge-plugin'
+  ]
+)

src/main/java/com/criteo/gerrit/plugins/automerge/Module.java

diff --git a/src/main/java/com/criteo/gerrit/plugins/automerge/Module.java b/src/main/java/com/criteo/gerrit/plugins/automerge/Module.java
new file mode 100644
index 0000000..1cb4467
--- /dev/null
+++ b/src/main/java/com/criteo/gerrit/plugins/automerge/Module.java
@@ -0,0 +1,28 @@
+// Copyright 2014 Criteo
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package com.criteo.gerrit.plugins.automerge;
+import com.google.inject.AbstractModule;
+
+/**
+ * Main automerge Guice module.
+ *
+ * Configures how all classes in the plugin are instantiated via Guice.
+ */
+public class Module extends AbstractModule {
+
+  @Override
+  protected void configure() {
+  }
+}