Merge pull request #446 from devton/master

Fix typo errors in notifications
cleaning and updating gemfile
fix typo
added some error handling since the new VideoInfo throws an exception for mal formed urls
the decorator now adds // as the url of the video comes only form from the host onwards and we do not want to use a fixed http (currently both youtube and vimeo will handle the https)
now the field is an instance of VideoInfo and the provider is a separate property. I also removed that spec about mantaining cache as it didn't make much sense to me
add margin to updates text and fix regex
Merge pull request #447 from diogob/cleaning_and_updating_gemfile

cleaning and updating gemfile
Merge pull request #448 from adrianob/add_margin_to_updates

add margin to updates text and fix regex