More updates to pom to prepare for deploying to sonatype

pom.xml

@@ -1,6 +1,12 @@
 <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/xsd/maven-4.0.0.xsd">
 
+	<parent>
+    	<groupId>org.sonatype.oss</groupId>
+    	<artifactId>oss-parent</artifactId>
+    	<version>7</version>
+  	</parent>
+
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>com.mitchellbosecke</groupId>
 	<artifactId>pebble</artifactId>
@@ -74,6 +80,20 @@
           			<tagNameFormat>v@{project.version}-alpha</tagNameFormat>
         		</configuration>
       		</plugin>
+      		<plugin>
+        		<groupId>org.apache.maven.plugins</groupId>
+        		<artifactId>maven-gpg-plugin</artifactId>
+        		<version>1.4</version>
+        		<executions>
+          			<execution>
+            			<id>sign-artifacts</id>
+            			<phase>verify</phase>
+            			<goals>
+              				<goal>sign</goal>
+            			</goals>
+          			</execution>
+        		</executions>
+      		</plugin>
 		</plugins>
 	</build>