ex10 - Whitespace and MY_HEREDOC

I can pick up the extra credit later, though that one is valid.... I've
got a building itch now though....for more than strings...
ex11 - gets.chomp

The extra credit involves finding the documentation, and I want to get
to bigger stuff NOW. So I'll come back for these.
ex12 - requiring libraries

Extra credit completed.
open-uri library imported.
ex12 - Ran with error - copied source

I ran the code from ex12, and got an open-loop: redirection forbidden
error message. I copied the code from Ruby the hard way to check, and it
persisted.
ex13 and ex14
ex14 extra credit.