began task 1.1 and updated .gitignore
  On branch master
	modified:   .gitignore
	new file:   Aufgabe1/RationalNumber/RationalNumber/RationalNumber.pro
	new file:   Aufgabe1/RationalNumber/RationalNumber/main.c
	new file:   Aufgabe1/RationalNumber/RationalNumber/rationalnumber.cpp
	new file:   Aufgabe1/RationalNumber/RationalNumber/rationalnumber.h
	new file:   Aufgabe1/RationalNumber/testRN.cpp