Add maven assembly plugin to create a runnable jar. Part of #4.

pom.xml

@@ -54,6 +54,28 @@
 					</gitDescribe>
 				</configuration>
 			</plugin>
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-assembly-plugin</artifactId>
+				<executions>
+					<execution>
+						<phase>package</phase>
+						<goals>
+							<goal>single</goal>
+						</goals>
+						<configuration>
+							<archive>
+								<manifest>
+									<mainClass>eu.snik.tag.gui.MainWrapper</mainClass>
+								</manifest>
+							</archive>
+							<descriptorRefs>
+								<descriptorRef>jar-with-dependencies</descriptorRef>
+							</descriptorRefs>
+						</configuration>
+					</execution>
+				</executions>
+			</plugin>
 		</plugins>
 	</build>
 	<dependencies>

src/main/eu.snik.tag/eu/snik/tag/gui/MainWrapper.java

@@ -0,0 +1,8 @@
+package eu.snik.tag.gui;
+
+/** Workaround for the jar execution error "Error: JavaFX runtime components are missing, and are required to run this application".
+ * See https://stackoverflow.com/questions/52653836/maven-shade-javafx-runtime-components-are-missing .*/
+public class MainWrapper
+{
+	public static void main(String[] args) {Main.main(args);}
+}