loosen development dependencies
use code-climate instead of coveralls
use codeclimate coverage
Use OpenSSL::Digest in place of deprecated OpenSSL::Digest::Digest
Merge pull request #36 from davelacy/contribution

Use OpenSSL::Digest in place of deprecated OpenSSL::Digest::Digest
bump to 2.0.1
update gems
Merge branch 'master' of https://github.com/phoet/asin