featureA
add featureC
merge A and B
Merge branch 'master' of https://github.com/Book4212/pick-super-engineer

Conflicts:
	picker.rb
edit featureC
Merge FeatureC and modified FeatureA and B
merge featureC
edit featureC for get empty argument.
Merge branch 'featureC'
Add readme and delete the code is excess