Add back Maven build

The Maven build is needed to build the plugin standalone. The current
Buck build only allow builds in the Gerrit tree. Bucklets will only be
supported with Gerrit 2.10.

Change-Id: I9d532c9205a95e0c4f1b3d4da1f7c561610c370f
Signed-off-by: Edwin Kempin <edwin.kempin@sap.com>
diff --git a/pom.xml b/pom.xml
new file mode 100644
index 0000000..d0ee818
--- /dev/null
+++ b/pom.xml
@@ -0,0 +1,96 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+Copyright (C) 2013 The Android Open Source Project
+
+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.
+-->
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <groupId>com.googlesource.gerrit.plugins.reviewersbyblame</groupId>
+  <artifactId>reviewersbyblame</artifactId>
+  <packaging>jar</packaging>
+  <version>2.9-SNAPSHOT</version>
+  <name>reviewersbyblame</name>
+
+  <properties>
+    <Gerrit-ApiType>plugin</Gerrit-ApiType>
+    <Gerrit-ApiVersion>${project.version}</Gerrit-ApiVersion>
+  </properties>
+
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-jar-plugin</artifactId>
+        <version>2.4</version>
+        <configuration>
+          <archive>
+            <manifestEntries>
+              <Gerrit-PluginName>reviewers-by-blame</Gerrit-PluginName>
+              <Gerrit-Module>com.googlesource.gerrit.plugins.reviewersbyblame.ReviewersByBlameModule</Gerrit-Module>
+              <Implementation-Vendor>Gerrit Code Review</Implementation-Vendor>
+              <Implementation-URL>http://code.google.com/p/gerrit/</Implementation-URL>
+
+              <Implementation-Title>${Gerrit-ApiType} ${project.artifactId}</Implementation-Title>
+              <Implementation-Version>${project.version}</Implementation-Version>
+
+              <Gerrit-ApiType>${Gerrit-ApiType}</Gerrit-ApiType>
+              <Gerrit-ApiVersion>${Gerrit-ApiVersion}</Gerrit-ApiVersion>
+            </manifestEntries>
+          </archive>
+        </configuration>
+      </plugin>
+
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-compiler-plugin</artifactId>
+        <version>2.3.2</version>
+        <configuration>
+          <source>1.7</source>
+          <target>1.7</target>
+          <encoding>UTF-8</encoding>
+        </configuration>
+      </plugin>
+    </plugins>
+  </build>
+
+  <dependencies>
+    <dependency>
+      <groupId>com.google.gerrit</groupId>
+      <artifactId>gerrit-${Gerrit-ApiType}-api</artifactId>
+      <version>${Gerrit-ApiVersion}</version>
+      <scope>provided</scope>
+    </dependency>
+
+    <dependency>
+      <groupId>junit</groupId>
+      <artifactId>junit</artifactId>
+      <version>4.8.1</version>
+      <scope>test</scope>
+    </dependency>
+  </dependencies>
+
+  <repositories>
+    <repository>
+      <id>gerrit-snapshot-repository</id>
+      <url>https://oss.sonatype.org/content/repositories/snapshots</url>
+    </repository>
+  </repositories>
+  <description>Find possible reviewers using git blame</description>
+  <organization>
+      <name>Spotify AB</name>
+  </organization>
+</project>