fixes #27 - To skip encoding related tests when LANG !~ /UTF-?8/

See: [RT#95388](https://rt.cpan.org/Public/Bug/Display.html?id=95388)
-- t/lite_xhf.t fails with non-UTF-8 locale
Add perl 5.20 for travis
refs #2 - Spell correction. s/regist/register/g
v0.0.8 rc