Remove class5 git_config
Remove class5 songs
Remove class5 target images
Remove class5 gitignore file
Improve class5 exercises
Fix typos
Fix typo
Merge branch 'master' of https://github.com/codefellows/sea-c21-ruby
Add class5 exercise5
Improve branching and looping guides
Fix bug
Improve readability
Improve array and method guides
Fix typo
Merge branch 'master' of https://github.com/codefellows/sea-c21-ruby
Finish class4 exercise 1