Re-word instructions for class2 exercise 3
Remove class4 git_config
Fix exercise name
Tweak branching example
Improve class4 exercises
Tweak TIP
commit stuff
commit stuff
Remove class5 git_config
Remove class5 songs
Merge branch 'master' of https://github.com/codefellows/sea-c21-ruby
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
commit class 4/exercises 1 - 3
commit homework  4.4 + 4.5