Fixed wrong element type and stray comma for country select box
Add rake gem to Gemfile

- Change source to https://rubygems.org
Added validations

- verify if the element: #countries-autocomplete-0 exists
- verify if the element: #authy-countries exists
Merge remote-tracking branch 'origin/master'
Update Gems
Merge branch 'fix-sample' of github.com:Plasma/authy-form-helpers into Plasma-fix-sample

Conflicts:
	sample/register.html
Merge branch 'Plasma-fix-sample'