Update tins dependency

[phildionne]

As of now the Tins dependency is locked at version 0.3 but the latest version is 1.0.1. I've tried to fork and do a pull request but the dependencies and gemspec handling looks like an unusual setup.

So please, could you update Tins' version and maybe consider refactoring the gem build.

Thanks!

[chanko]

+1

[flori]

Thus should be done in amatch 0.3.0.