[Euler] Add my solution to Euler #188.
[Euler] Add my solution to Euler #188.

stmuk/perl6-examples,Quinny/perl6-examples,stmuk/perl6-examples,shlomif/perl6-examples,agentzh/perl6-examples,shlomif/perl6-examples,perl6/perl6-examples,Quinny/perl6-examples,perl6/perl6-examples,agentzh/perl6-examples,shlomif/perl6-examples,Quinny/perl6-examples,shlomif/perl6-examples,stmuk/perl6-examples,perl6/perl6-examples,agentzh/perl6-examples,shlomif/perl6-examples,perl6/perl6-examples,Quinny/perl6-examples,Quinny/perl6-examples,perl6/perl6-examples,stmuk/perl6-examples,stmuk/perl6-examples