[wip] refactor
fix specs
refactor observer creation method
load exception fix
use ActiveSupport::Notifications for catching events
whitespace and ruby 1.9 hash syntax
optimise Eventifier::Event creation
shift observer class creation into trackable_class
separate out tracker to its own class
extract out the notifier too
pulling out more stuff into classes
[wip] remove the need for observers on Eventifier::Event
fix specs.  Now we need more specs...
[wip] oh god... oh god...
[wip] err, so the specs are passing?
tidy requires

code comment
add reference to mailer
Switching from a Railtie to an Engine.
Remove Gemfile.lock from the repository.
Shifting helpers to correct folder structure, include behaviour to engine.