Merge pull request #1 from rquinnlv/master

Installing Dockerfile
Update test for issues_controller
Generate elections controller and serializer; rake db:migrate
Update tests
Merge branch 'Elections'
Generate Candidate scaffold, update tests
Update models
Update controllers, models and tests for candidates
Update routes file
Update tests
Update README
Add gem 'versionist' to Gemfile and bundle install
Create directory structures for API version v1; rails g versionist:new_api_version v1 V1 --path=value:v1 --default
Move controller files (except application controller) into v1 folder
Wrap controller classes in module V1 and update routes
Update database with samples and test routes
Update README
Update README
Move controller test files to integration/v1 folder and update class
Update README