add licence and license plugin

pom.xml

@@ -10,13 +10,35 @@
 	<packaging>jar</packaging>
 	<name>Mock Http Server</name>
 	<description>Mock HTTP Server for Java Testing</description>
+	<licenses>
+		<license>
+			<name>Apache 2</name>
+			<url>http://www.apache.org/licenses/LICENSE-2.0.txt</url>
+			<distribution>repo</distribution>
+		</license>
+	</licenses>
 	<url>https://github.com/jharlap/mock-http-server</url>
 	<properties>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
 	</properties>
 	<build>
 		<plugins>
+			<plugin>
+				<groupId>com.mycila.maven-license-plugin</groupId>
+				<artifactId>maven-license-plugin</artifactId>
+				<version>1.10.b1</version>
+				<configuration>
+					<header>src/etc/header.txt</header>
+					<includes>
+						<!-- Only copyright the java and pom.xml -->
+						<include>src/main/java/**</include>
+						<include>src/test/java/**</include>
+						<include>pom.xml</include>
+						<include>LICENCE</include>
+					</includes>
+				</configuration>
+			</plugin>
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-compiler-plugin</artifactId>

src/etc/header.txt

@@ -0,0 +1,13 @@
+Copyright ${year} ${user.name} <${email}>
+
+   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.