[README.md] update dependency installation notes.
[README.md] update dependency installation notes.
perl6/perl6-examples,shlomif/perl6-examples,perl6/perl6-examples,perl6/perl6-examples,shlomif/perl6-examples,perl6/perl6-examples,shlomif/perl6-examples,shlomif/perl6-examples,perl6/perl6-examples,shlomif/perl6-examples