Adding signature step to build

Author: Paul Gray

pom.xml

@@ -1,9 +1,12 @@
 <?xml version="1.0"?>
-<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">
+<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>
 
     <name>IMS BasicLTI Utilities</name>
-    <description>BasicLTI Utilities are a set of utility classes to aid in the development of BasicLTI consumers and providers. They deal with much of the heavy lifting and make the process more opaque to the developer.</description>
+    <description>BasicLTI Utilities are a set of utility classes to aid in the development of BasicLTI consumers and
+        providers. They deal with much of the heavy lifting and make the process more opaque to the developer.
+    </description>
     <url>https://github.com/IMSGlobal/basiclti-util-java</url>
     <groupId>org.imsglobal</groupId>
     <artifactId>basiclti-util</artifactId>
@@ -54,9 +57,9 @@
     </reporting>
 
     <scm>
-      <connection>scm:git:git@github.com:IMSGlobal/basiclti-util-java.git</connection>
-      <developerConnection>scm:git:git@github.com:IMSGlobal/basiclti-util-java.git</developerConnection>
-      <url>git@github.com:IMSGlobal/basiclti-util-java.git</url>
+        <connection>scm:git:git@github.com:IMSGlobal/basiclti-util-java.git</connection>
+        <developerConnection>scm:git:git@github.com:IMSGlobal/basiclti-util-java.git</developerConnection>
+        <url>git@github.com:IMSGlobal/basiclti-util-java.git</url>
     </scm>
 
     <properties>
@@ -172,46 +175,59 @@
                 </configuration>
             </plugin>
             <plugin>
-              <groupId>org.apache.maven.plugins</groupId>
-              <artifactId>maven-source-plugin</artifactId>
-              <version>2.2.1</version>
-              <executions>
-                <execution>
-                  <id>attach-sources</id>
-                  <goals>
-                    <goal>jar-no-fork</goal>
-                  </goals>
-                </execution>
-              </executions>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-source-plugin</artifactId>
+                <version>2.2.1</version>
+                <executions>
+                    <execution>
+                        <id>attach-sources</id>
+                        <goals>
+                            <goal>jar-no-fork</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-javadoc-plugin</artifactId>
+                <version>2.9.1</version>
+                <executions>
+                    <execution>
+                        <id>attach-javadocs</id>
+                        <goals>
+                            <goal>jar</goal>
+                        </goals>
+                        <configuration>
+                            <failOnError>false</failOnError>
+                        </configuration>
+                    </execution>
+                </executions>
             </plugin>
             <plugin>
-              <groupId>org.apache.maven.plugins</groupId>
-              <artifactId>maven-javadoc-plugin</artifactId>
-              <version>2.9.1</version>
-              <executions>
-                <execution>
-                  <id>attach-javadocs</id>
-                  <goals>
-                    <goal>jar</goal>
-                  </goals>
-                  <configuration>
-                    <failOnError>false</failOnError>
-                  </configuration>
-                </execution>
-              </executions>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-gpg-plugin</artifactId>
+                <executions>
+                    <execution>
+                        <id>sign-artifacts</id>
+                        <phase>verify</phase>
+                        <goals>
+                            <goal>sign</goal>
+                        </goals>
+                    </execution>
+                </executions>
             </plugin>
         </plugins>
     </build>
 
     <distributionManagement>
-      <snapshotRepository>
-        <id>ossrh</id>
-        <url>https://oss.sonatype.org/content/repositories/snapshots</url>
-      </snapshotRepository>
-      <repository>
-        <id>ossrh</id>
-        <url>https://oss.sonatype.org/service/local/staging/deploy/maven2/</url>
-      </repository>
+        <snapshotRepository>
+            <id>ossrh</id>
+            <url>https://oss.sonatype.org/content/repositories/snapshots</url>
+        </snapshotRepository>
+        <repository>
+            <id>ossrh</id>
+            <url>https://oss.sonatype.org/service/local/staging/deploy/maven2/</url>
+        </repository>
     </distributionManagement>
 
 </project>