added welcome_email_feature
Merge pull request #461 from YaroSpace/welcome_email_feature

Welcome email feature in settings.yml
Moved non Youtube Videos related methods out to youtube_helper
Reindent
Move Youtube Related logic to YoutubeVideosService
Fixed Specs after migration to youtube service
Using subject in specs for YoutubeService
Using bit of metaprogramming to make the call easier
Make use of @object instance variable
Extract methods from youtube service to user and project models
Extracting members_tags to project model
Splitting up build_request for both user and project videos
Moving API code to lib/ and renaming interface
Add Recursive Features Option to cucumber.yml
Moved over to module from Class
Rewriting of Youtube Tests from Scratch. Public Interface Tests Completed
Integration tests for Youtube Project Videos
Integration tests for Youtube User Videos
Tests for YoutubeVideos private methods
Improve naming of specs