#65 deleted gson-dependency in pom.xml file
#61 created annotation class and used the annotation in two classes [DataGeneratorService](https://github.com/FRosner/DataGenerator/blob/master/src/main/java/de/frosner/datagenerator/generator/DataGeneratorService.java) and [SwingMenu](https://github.com/FRosner/DataGenerator/blob/master/src/main/java/de/frosner/datagenerator/gui/SwingMenu.java)