Add warmup exercise 21
Update series product warmup
Merge branch 'master' of https://github.com/JumpstartLab/warmup-exercises
Add warmup
Merge branch 'master' of https://github.com/JumpstartLab/warmup-exercises
Add code example
Fix require statement
Add missing skip
Add final 'say' warmup
Remove extension on warmup 23
Merge branch 'master' of https://github.com/JumpstartLab/warmup-exercises
Sample solution to Say 4
Merge branch 'master' of https://github.com/JumpstartLab/warmup-exercises
Another word problem
Add warmup
Merge branch 'master' of https://github.com/JumpstartLab/warmup-exercises
Add example for calculator
Add grade school example
Call .new on Hash like a normal person
Add binary warmup