Add .tox to .gitignore
Solve question 50
Add newline at end of file
Solve question 48
Merge pull request #7 from pivanlo/update-gitignore

Add .tox to .gitignore
Merge remote-tracking branch 'pivlano/q48-solution'
Improve question 48 solution
Merge remote-tracking branch 'pivlano/q50-solution'
Improve question 50 solution
Make question 50 solution more OOP