spec test outdated.
update outdated gem syntax
delete outdated require
Merge pull request #26 from windwiny/outd

Update spec test data; update rspec gem syntax.
keep size_t as :size_t during type symbol mapping

size_t is architecture/os dependent. It can't be mapped to a more specific type.
Merge pull request #27 from phemmer/fix_size_t

keep size_t as :size_t during type symbol mapping