Ignore Gemfile.lock
Halts the callbacks chain if a callback is falsey
Added a test case for falsey chain ordering
Implemented `:halts_on_falsey`
Removed dependency on ActiveSupport
Get rid of rubygems https warning
Added travis.yml :)
Added pry for easy debugging :)
Test on 1.8.7 :)
`run_hook` should return the chain immediately
save all hook callbacks in Hook::@_hooks instead of creating an inheritable_attr per hook.
let Hook store callbacks and execute those in #run.
don't add falsey return value to results.