Updated check_revision.cap to use :branch from config/deploy.rb
Ignoring bins from bundle --binstubs
Fixed typo in config/deploy.rb, adds info message to check_revision.
Upgrade to Capistrano v3 almost complete; updated config files for new deploy_to path; updated Gemfile for new gems.
Change deploy branch to master, closes #13.
Merges changes from cap3 for upgrade to Capistrano 3