updated gitignore
added factories
renamed
using factory in main
removed felix, added janis
line breaks
Übung 4
added further Converters, makefile is now Lintpool compatible, ovverride changed
replaced faulty comma by dot
Added box and lines diagram
renamed
Deleted currencyconv
fixed path
added clean command again
added create method
checked for errors
rest shit
Merge branch 'uebung4'