Add .travis.yml
Keep test infrastructure up-to-date

Debugging
debugger doesn't work correctly any longer with Ruby 2.0.0,
Ruby 1.8.x is now end-of-life anyway.
Maybe depend on byebug instead? I just changed the Gemfile during debugging…

JSON
yajl-ruby doesn't compile for me on MacOS X :(, so just remove dependencies on it.

Redis
Has a problem to grok the glueoutputbuf config option, so just comment it out.
Do not just extend/include Resque::Helpers module

This module will be deprecated in the upcoming version 2.0 of resque and already posts an annyoing warning because of that. So we copy the methods used by resque-loner in its Helpers module.

In the future Resque.encode and Resque.decode will provide encoding/decoding facilities for JSON, so we check if this is already the case:
 - If yes, just use these methods,
 - otherwise delegate to the Resque::Helpers methods with some black magic while silencing the warning. This way we can use the new Resque-API even if it isn't all there yet.