Add TW notifier and logic to update results job.

It also overrides the notify method in test mode
Adds TW notifier to add result job

It protects the job from a race condition with the update results job
the job will only add the result if the match does not have one yet
Notification will be sent only in that case as well
Adds message to the add result job
Adds simple_oauth gem dependency
Removes unnecessary double check for nil
Merge pull request #130 from threefunkymonkeys/129-twitter_notifier

129 twitter notifier