Resolve Issue #40: Python 2 print statements changed to use Python 3 print function (#50)

* Update 01_selection_sort.py

Updated last print statement for Python 3 print function.

* Update 01_countdown.py

Updated print statement to print function for Python 3.

* Update 05_quicksort.py

Updated print statement to print function for Python 3.

* Update 01_price_of_groceries.py

Condensed dictionary creation into one line, edited print statement to a print function for Python 3.

* Update 01_set_covering.py

Changed print statement to print function for Python 3.

* Update 01_binary_search.py

Changed print statements to print function for Python 3.

02_selection_sort/python/01_selection_sort.py

@@ -19,4 +19,4 @@ def selectionSort(arr):
       newArr.append(arr.pop(smallest))
   return newArr
 
-print selectionSort([5, 3, 6, 2, 10])
+print(selectionSort([5, 3, 6, 2, 10]))