lession 1
added temp files to git ignore list
fixing typo
adding second exercise
addign exercise 3
adding exercise 3
adding excercise 4
adding exercise 5
adding exercise 6
adding exercise  7
adding exercise 8
adding exercise 9
adding exercise 10
Adding excercise 11
Adding exercise 12
adding exercise 13
Adding exercise 14
adding exercise 15
adding exercise 16
adding exercise 17