Add spec
Remove unused attributes from test app initializer
Remove vcm and apns attributes from initialiser
Remove vcm and apns mattrs from notifiable.rb
Add env attr to NotifierBase.rb
Add configuration logic to batch.rb

Batch.rb is initialised with a config hash. It passes on properties to notifiers as they are initialized
Update add in batch.rb

Add now doesnt fail if notifiers don't have a property that appears in the configuration
Remove Notifiable env
Add method test_env? to notifier_base.rb
Update batch_spec to test against Rails.env
Merge pull request #36 from FutureWorkshops/configurable

Move notifier configuration into Batch.rb
Merge branch 'refs/heads/fix_env' into dev
Fix env
Remove apns_message method from notification
Spec for property overrides
Add a provider_value method which overrides the base values
Add notification_value method to notifier_base
Merge pull request #37 from FutureWorkshops/property_overrides

A method to provide and override notification values for different services
Remove notification_value from notification.rb
Bump version