class skeleton with inheritance and template pattern
single purpose methods for classes; still more to do
yarn methods functioning
cleaning up methods in child classes for hat
clarifying class name for ease of future expansion; assoc note
updating framework info
change size for needle method for clarity
@cast_on assignment fixed; estimated_yardage notes added
size and ease methods
remove rspec requirements
Merge branch 'gems'
Merge branch 'master' of https://github.com/feministy/knithat

Conflicts:
	Rakefile