Fixed Ruby version
Fixed about_iteration.rb to pass tests

Learned about:
* each is a method on arrays,
* iterations with do and curly brace blocks,
* breaks,
* collect and map methods.

[#65851774]
Fixed about_iteration.rb to pass tests

Learned about:
* select and find_all methods,
* inject method,
* iteration methods work on any collection,

[#65851774]
Merge pull request #16 from mkreyman/65851774_about_iteration_master

about iteration master

[Delivers #65851774]