Bump version and add source Jar creation

Signed-off-by: Gary O'Neall <gary@sourceauditor.com>

pom.xml

@@ -3,7 +3,7 @@
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>org.spdx</groupId>
 	<artifactId>spdx-tools</artifactId>
-	<version>2.2.2-SNAPSHOT</version>
+	<version>2.2.2</version>
 	<name>SPDX tools</name>
 	<description>SPDX tools</description>
 	<licenses>
@@ -429,6 +429,20 @@ This license is based on the Apache Software License, version 1.1.</extractedTex
           				</execution>
         			</executions>
       			</plugin>
+      			<plugin>
+			        <groupId>org.apache.maven.plugins</groupId>
+			        <artifactId>maven-source-plugin</artifactId>
+			        <version>3.2.1</version>
+			        <executions>
+			          <execution>
+			            <id>attach-sources</id>
+			            <phase>verify</phase>
+			            <goals>
+			              <goal>jar-no-fork</goal>
+			            </goals>
+			          </execution>
+			        </executions>
+			      </plugin>
 		</plugins>
 	</build>
 	<reporting>