clean up and fix project dependencies

.gitignore

@@ -3,8 +3,5 @@
 .settings/
 PDFA*.pdf
 target/
-pom.xml.tag
-pom.xml.releaseBackup
-pom.xml.next
-release.properties
+pom.xml.*
 bin/

mustang/src/main/java/org/mustangproject/ZUGFeRD/App.java

@@ -1,13 +0,0 @@
-package org.mustangproject.ZUGFeRD;
-
-/**
- * Hello world!
- *
- */
-public class App 
-{
-    public static void main( String[] args )
-    {
-        System.out.println( "Hello World!" );
-    }
-}

pom.xml

@@ -19,6 +19,12 @@
 			<version>2.0.0-SNAPSHOT</version>
 			<scope>compile</scope>
 		</dependency>
+		<dependency>
+			<groupId>org.apache.pdfbox</groupId>
+			<artifactId>jempbox</artifactId>
+			<version>2.0.0-SNAPSHOT</version>
+			<scope>compile</scope>
+		</dependency>
 		<dependency>
 			<groupId>junit</groupId>
 			<artifactId>junit</artifactId>